In a survey conducted on an SRS of 200 American adults, 72% of them said they believed in aliens Give a 95% confidence interval for percent of American adults who believe in aliens 6. Section 7.2; Problem 6: Have the assumptions been met? A. Yes. Values of 72 and 28. B. Yes. Values of 144 and 56. C. Yes. Values of 14400 and 5600. D. No. Values of 0.72 and 0.28. E. No. Values of 14.4 and 516

Answers

Answer 1

The assumptions been met (0.6581,0.7819).

What is American adults?

In 2020, the U.S. Census Bureau counted 331.4 million people living in the United States; more than three-quarters (77.9%) or 258.3 million were adults, 18 years or older — a 10.1% increase from 234.6 million in 2010.

Given that.

[tex]$$\begin{aligned}& p=0.72 .(1-p)=1-0.72=0.28 \\& n=200 .\end{aligned}$$[/tex]

At [tex]$95 \%$[/tex] confidence level x value is 1.96

z=1.96

So r

A 95 % confidence interval bor percent of American adults who beleive in Aliens is,

[tex]$$\begin{gathered}p \pm 2 \sqrt{\frac{p \times q}{n}} \\\therefore 0.72+1.96 \sqrt{\frac{0.72 \times 0.28}{200}} \\\therefore 0.72 \pm 1.96 \sqrt{0.0010} \\0.72 \pm 0.0619 \\\therefore \quad(0.6581,0.7819)\end{gathered}$$[/tex]

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Related Questions

What is the sampling method that involves taking a random selection of people from a defined population?.

Answers

Probability Sampling

Intermediate Value Theorem Help

Answers

According to the intermediate value theorem, every continuous function is a Darboux function.

Given that,
To discuss, what is Intermediate Value Theorem.

What is Darboux's function?

Darboux's theorem asserts that for a function f(x) that is differentiable on the domain [a, b], there exists some point c on the open interval (a, b) such that f′(c).

Here,
The intermediate value theorem is defined as that if the function is a continuous function over a domain [a, b] with domain values f(a) and f(b) at the interval's endpoints, then the function takes any value between f(a) and f(b) at any point inside the range.

Thus, According to the intermediate value theorem, every continuous function is a Darboux function.

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I need some step to solve this please

Answers

Answer:

  MN = 50

Step-by-step explanation:

You want the length of the base segment MN in triangle MNO, where MN is marked 41+3x and parallel midsegment PQ is marked 49-8x.

Midsegment

The midsegment is half the length of the parallel base segment. That means the base segment is double the length of the midsegment:

  MN = 2·PQ

  41 +3x = 2(49 -8x)

  41 +3x = 98 -16x

  19x = 57 . . . . . . . . add 16x-41

  x = 3

  MN = 41 +3x = 41 +3·3 = 50

The length of MN is 50 units.

Recall that in basketball, a team can score 1-point
baskets (free throws), 2-point baskets, or 3-point
baskets. List all of the different ways a basketball
team could score 24 points, without making any free
throws.

Answers

The possible ways a basketball team could score 24 points, without making any free throws are given below.

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

Three types of points:

Free throws - 1 point

2 - points.

3 - points.

Now,

The different ways to have a score of 24 points without making any free throws.

Case 1:

2 x 12 = 24 points.

Case 2:

3 x 8 = 24 points.

Case 3:

2 x 6 = 12 and 3 x 4 = 12

12 + 12 = 24 points.

Case 4:

2 x 9 = 18 and 3 x 2 = 6

18 + 6 = 24 points

Case 5:

2 x 3 = 6 and 3 x 6 = 18

6 + 18 = 24 points

Similarly, we can have many possible ways.

We have to make sure that the points add to 24 points.

Thus,

The possible ways a basketball team could score 24 points, without making any free throws are given above.

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Answer:

The different ways to have a score of 24 points without making any free throws.

Case 1:

2 x 12 = 24 points.

Case 2:

3 x 8 = 24 points.

Case 3:

2 x 6 = 12 and 3 x 4 = 12

12 + 12 = 24 points.

Case 4:

2 x 9 = 18 and 3 x 2 = 6

18 + 6 = 24 points

Case 5:

2 x 3 = 6 and 3 x 6 = 18

6 + 18 = 24 points

Step-by-step explanation:

Because i know

Please help anyone thank you. ​

Answers

By using proportionality, it can be calculated that-

a) Constant of proportionality that relates the length of paver in the model and the actual length is k = [tex]\frac{4}{3}[/tex]

[tex]y = \frac{4}{3}x[/tex] is the required equation which relates the length of paver in the model and the actual length of the paver

b) Area of the rectangle = [tex]\frac{1}{3}[/tex] sq.feet

Constant of proportionality that relates the area of paver in the model and the actual area is k = [tex]\frac{9}{16}[/tex]

What is proportionality?

Suppose there are two quantities. Proportionality indicates that if there is a change in the value of one quantity, the value of other quantity also changes but maintaining a constant ratio

Proportionality can be direct or inverse

Direct proportion

Two quantities are said to be in direct proportion if on increasing the value of one quantity, the value of other quantity also increases and vice versa.

For example cost of a commodity and quantity of a commodity are in direct proportion

Inverse proportion

Two quantities are said to be in inverse proportion if on increasing the value of one quantity, the value of other quantity decreases and vice versa.

For example Number of men and number of days taken by those men to complete a job.

Length of paver in the model = [tex]\frac{2}{3}[/tex] ft

Actual length of paver = [tex]\frac{1}{2}[/tex] ft

Let the constant of proportionality be k

[tex]\frac{2}{3} = \frac{1}{2}k[/tex]

k = [tex]\frac{2}{3} \div \frac{1}{2}[/tex]

k = [tex]\frac{4}{3}[/tex]

Let y be the length of paver in the model and x is the actual length

[tex]y = \frac{4}{3}x[/tex] is the required equation which relates the length of paver in the model and the actual length of the paver

b) Area of the model = [tex]\frac{1}{2}\times \frac{3}{8} = \frac{3}{16}[/tex] sq. feet

Actual area = [tex]\frac{2}{3} \times \frac{1}{2} = \frac{1}{3}[/tex] sq.feet

Let the constant of proportionality be l

[tex]\frac{3}{16} = \frac{1}{3}l[/tex]

l = [tex]\frac{3 \times 3}{16}\\[/tex]

l = [tex]\frac{9}{16}[/tex]

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What is the answer i need them now pls I'm going to fail

Answers

The least to greatest or increasing order of the given data set will be 0.1375,0.25,5/8,11/16 thus, option (C) is correct.

What is a number system?

The number system is a way to represent or express numbers.

A decimal number is a very common number that we use frequently.

Any of the multiple sets of symbols and the guidelines for utilizing them to represent numbers are included in the Number System.

As per the given data set,

The value of 5/8 = 0.625 and 11/16 = 0.6875

Thus, 0.1375 < 0.25 < 5/8 < 11/16

Hence "The least to greatest or increasing order of the given data set will be 0.1375,0.25,5/8,11/16".

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[tex]\frac{7}{10}m-\frac{1}{3}m+2m[/tex]

Answers

The algebraic expression is [tex]\frac{7}{10}m-\frac{1}{3}m+2m[/tex] = [tex]\frac{71m}{30}[/tex]

What do you mean by an algebraic expression?

Algebraic expression is the idea of ​​using letters or alphabets to represent numbers without specifying the actual values. Algebra Basics taught us how to use letters like x, y, and z to represent unknown values. These characters are called variables here. An algebraic expression can be a combination of variables and constants. Any multiplied value that is prefixed to a variable is a factor.

Given expression:

[tex]\frac{7}{10}m-\frac{1}{3}m+2m[/tex]

= [tex]\frac{21m-10m+60m}{30}[/tex]

= [tex]\frac{71m}{30}[/tex]

Therefore, [tex]\frac{7}{10}m-\frac{1}{3}m+2m[/tex] = [tex]\frac{71m}{30}[/tex]

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Determine which situation is represented by the given dot plot. A. Billy bought between 0 and 6 shirts from each of his favorite 6 stores. B. Across the state, 15 cities were given a score between 0 and 15 regarding the cleanliness of their community. C. Henry has 15 classmates and each has between 0 and 6 pets. D. Each of Jessica's 6 friends has between $0 and $15 in his or her wallet.

Answers

The situation which can be used to represent the dot plot is "Henry has 15 classmates and each has between 0 and 6 pets".

The correct answer option is option C

Which situation represent the dot plot?

A dot plot graph is a graph plotted by using small spots to represent data.

Henry has 15 classmates and each has between 0 and 6 pets

Each dot represent a pet

Total of Henry's classmates = 15Number of class mates with 0 pets = 2Number of class mates with 1 pets = 4Number of class mates with 2 pets = 2Number of class mates with 3 pets = 3Number of class mates with 4 pets = 2Number of class mates with 5 pets = 1Number of class mates with 6 pets = 1

Consequently, the dot plot represent Henry's situation of having 15 classmates and each has between 0 and 6 pets

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coach jenson bought 15 shirts for $180 for the basketball team. the unit rate for the shorts was 1.50 less than the unit rate for shirts. choach jenson bought the same number of shorts as shirts to complete each uniform. What was the total cost of the uniforms for the team? explain your answer

Answers

Answer:

$337.50

Step-by-step explanation:

To find the total cost of the uniforms, you will need to find the unit price of the shirts and the unit price of the shorts and then multiply each by the number of shirts and shorts, respectively.

The unit price of the shirts is the total cost divided by the number of shirts, or $180 / 15 shirts = 12/shirt.

The unit price of the shorts is

$12/shirt - $1.50/shirt = 10.5/shirt.

Since the coach bought the same number of shirts and shorts, the total number of shirts and shorts is 15 shirts + 15 shorts = 30 shirts and shorts.

The total cost of the shirts is $12/shirt * 15 shirts = $12*15 = 180.

The total cost of the shorts is $10.5/shirt * 15 shirts = 157.5

The total cost of the uniforms is the sum of the cost of the shirts and the cost of the shorts, or $180 + 157.5= 337.5.

Therefore, the total cost of the uniforms for the team is $337.5.

the expression x^3+ax^3+bx-3 where a and b are constants, has a factor of x-3 and leaves a remainder of 15 when divided by x+2. find the value of a and b​

Answers

The values of a and b in the expression x³ + ax³ + bx - 3 are a = 1 and b = -17

How to determine the values of a and b?

From the question, we have the following parameters that can be used in our computation:

x^3+ax^3+bx-3

Rewrite properly

So, we have

x³ + ax³ + bx - 3

The expression has a factor of x - 3

This means that

(3)³ + a(3)³ + b(3) - 3 = 0

So, we have

27 + 27a + 3b - 3 = 0

Evaluate the like terms

27a + 3b = -24

Divide by 3

9a + b = -8

The expression has a remainder of 15 when divided by x + 2

This means that

(-2)³ + a(-2)³ + b(-2) - 3 = 15

So, we have

-8 - 8a - 2b - 3 = 15

Evaluate the like terms

-8a - 2b = 26

Divide by -2

4a + b = -13

So, we have

9a + b = -8

4a + b = -13

Subtract the equations

5a = 5

Divide

a = 1

Recall that 4a + b = -13

So, we have

4(1) + b = -13

So, we have

b = -13 - 4

Evaluate

b = -17

Hence, the values are 1 and -17

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The graph of a function g is shown below.
Use the graph of the function to find its average rate of change from x= - 1 to x = 2.
Simplify your answer as much as possible.

Answers

Answer:

Average Rate of Change

Functions are relationships that exist between two variables. Graphing them allows us to observe and predict their behavior. The graph of a function is a line or curve where we can determine random values directly and identify a set of results through it.

The rate of change is one of the calculations we can determine from a graph. It is the change of the function per unit. It is deriving from the slope of the line formed in the interval. The formula for determining the rate of change is:

r

c

=

y

2

y

1

x

2

x

1

P

1

=

(

1

,

0

)

P

2

=

(

3

,

12

)

We use the average exchange rate formula:

r

c

=

y

2

y

1

x

2

x

1

We substitute the values, obtaining:

r

c

=

12

0

3

(

1

)

Solving, we obtain:

r

c

=

12

4

=

3

The average rate of change of

g

when

x

varies from

1

to

3

is:

R

c

=

3

A wedding singer is paid $60 per hour plus $15 for travel expenses. Identify the independent and dependent variables. Then write a rule in function notation for the situation, letting x represent the independent variable.

Answers

The expression for the situation regarding the wedding singer is 15 + 60x.

The independent variable is the travel expense.

The dependent variable is the amount per hours.

What is the expression for the situation?

It ie important to note that an expression simply refers to the mathematical statements which have at least two terms which are related by an operator and contain either numbers, variables, or both. Addition, subtraction, multiplication, and division are all possible mathematical operations.

Let the number of hours be x

Since the wedding singer is paid $60 per hour plus $15 for travel expenses, the expression will be:

= 15 + (60 × x)

= 15 + 60x

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can someone help with this thank you so much .

Answers

Hello negations should be the exact opposite of the given statement
If they gave us x equals to 100
-x is not equal to 100
-it is not the case that x is equal to 100
can be our negations you can’t add some new information like x is equal to 200, or x is equal to an elephant, anything.
So the answers are,
No
Yes
Yes
No
wish you the best luck!

Breanne plans to invest her money into a simple interest savings account. Currently she has $14,374 to invest and the current market rate is 3.3% for annual interest yield. How long (in years) will Breanne need to leave the money in the account for it to earn $7,758 in interest? Round answer to the nearest hundredth (2 decimal places) of a year.

Answers

The intrest will be X=1293000/79057.

What is intest ?

Interest is the price of  you pay to borrow money or it is  cost you charge to lend money.

Based on the given condition we know that

{P=14374

{R=3.3%

{I=7758

Formulate and substitute

Substitute {P=14374

                 {R=3.3%

                 {I=7758

These are into formula I=Prt

7758=14374rt

We have to solve the equation

14374×0.033x=7758

Multiply

474.342x=7758

Devide both sides

X = 7758/474.342

By calculating we can get

X =1293000/79057

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Write the expression in simplest radical form. Write the expression in simplest radical form. The image is below only answer if ur hood at geometry please!!

Answers

Answer:

Step-by-step explanation:

[tex]2\sqrt{35[/tex]

The absolute value of -12 is 12 and we can find it on the number line by going 24 times right from -12.

Answers

Answer: yes you can.

Step-by-step explanation:

give 3 examples each.​

Answers

Answer:

  see below

Step-by-step explanation:

You want examples of use of the rules of logarithms:

  [tex]\begin{array}{ll}\vphantom{\dfrac{M}{gN}}1.&\log_b{(MN)}=\log_b{(M)}+\log_b{(N)}\\2.&\log_b{\left(\dfrac{M}{N}\right)}=\log_b{(M)}-\log_b{(N)}\\\vphantom{\dfrac{b}{g}}3.&\log_b{(M^a)}=a\cdot\log_b{(M)}\end{array}[/tex]

The point of these is that M and N and 'a' and 'b' can be anything. (Generally, 'b' will be a positive number greater than 1.) For the purpose here, we can let M ∈ {x^3y, (1+r)}, N ∈ {(x-4), r/n}, a ∈ {4, -3}, b ∈ {2, e}.

Using these values in various combinations, your examples could be ...

1. Product rule

  [tex]\log_2{((x^3y)(x-4))}=\log_2{(x^3y)}+\log_2{(x-4)}\\\\\ln{((1+r)(r/n))}=\ln{(1+r)}+\ln{(r/n)}\\\\ \log_2{((x^3y)(r/n))}=\log_2{(x^3y)}+\log_2{(r/n)}[/tex]

2. Quotient rule

  [tex]\log_2{\left(\dfrac{x^3y}{x-4}\right)}=\log_2{(x^3y)}-\log_2{(x-4)}\\\\\\\ln{\left(\dfrac{1+r}{r/n}\right)}=\ln{(1+r)}-(\ln{(r)}-\ln{(n)})\\\\\\ \log_2{\left(\dfrac{x^3y}{r/n}\right)}=\log_2{(x^3y)}-(\log_2{(r)}-\log_2{(n)})}[/tex]

3. Power rule

  [tex]\ln{(x^3y)^4}=4\ln(x^3y)=4(3\ln{(x)}+\ln{(y)}=12\ln{(x)}+4\ln{(y)}\\\\\log_2{(1+r)^{-3}}=-3\log_2{(1+r)}\\\\\log_2{(x^3y)^{-3}}=-3\log_2{(x^3y)}=-9\log_2{(x)}-3\log_2{(y)}[/tex]

Please help me
EMERGANCY

Answers

Answer:

[tex]\textsf{1.} \quad 4x \leq 25[/tex]

[tex]\textsf{2.} \quad x \leq 6.25[/tex]

3.  See attachment.

Step-by-step explanation:

Given information:

You have $25 and you want to buy some baseballs that cost $4 each.Let x be the number of baseballs that you could buy.

Question 1

If the baseballs cost $4 each and x is the number of baseballs, then 4x represents the total cost of the baseballs.

The maximum amount of money available to spend on the baseballs is $25.

Therefore, the inequality to represent this is:

[tex]\large\boxed{4x \leq 25}[/tex]

Question 2

Solve the inequality by dividing both sides by 4:

[tex]\implies \dfrac{4x}{4} \leq \dfrac{25}{4}[/tex]

[tex]\implies x \leq 6.25[/tex]

Note:  As x represents the number of baseballs you can buy, and as you cannot buy part of a baseball or negative baseballs, the real solution is 0 ≤ x ≤ 6.

Question 3

To graph  x ≤ 6.25  on a number line:

As the value of x is included in the interval, draw a closed circle at 6.25.As the value of x is equal to or less than 6.25, draw a line to the left of the closed circle and place an arrow on its left endpoint.

To graph  0 ≤ x ≤ 6  on a number line:

Place a closed circle at 0 and 6.Draw a line connecting the closed circles.

1. Write 4x^3- 6x + 2x^5+ 3 in standard form.

Answers

2x^5 + 4x^3 - 6x +3


Standard form means from highest exponent to lowest, with variable terms in front of any constants.
In the equation 4x^3 - 6x + 2x^5 + 3, the highest power is 5 and should be in the front. Then the second highest, 3, and the last variable term to raised to no power. The constant, 3, goes last.
This looks like: 2x^5 + 4x^3 - 6x +3.

Frank wants to earn at least $47 trimming trees. He charges $7 per hour and pays $9 in equipment fees. What are the possible numbers of hours Frank could trim trees?

Answers

By setting up the equation and solving and simplifying  the equation, the possible number of hours Frank can trim tree is 5.43 hours, round off the hour that will be 6 hours.

What is Algebraic simplification?

Algebraic simplification is the process of rewriting an algebraic expression in a simpler form, without changing its value.

What is algebraic expression?

An algebraic expression is a combination of numbers, variables, and arithmetic operations that can be evaluated to a specific numerical value.

let the required number of hours be h,

so setting up the equation,

7h + 9 = 47

Then we can subtract 9 from both sides to isolate h:

7h + 9 - 9 = 47 - 9

7h = 38

Dividing both sides by 7 gives us:

7h/7 = 38/7

h = 5.43

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how can confidence intervals help researchers attain their purpose of using a sample to understand a population?

Answers

The reason for why the confidence intervals help researchers attain their purpose of using a sample to understand a population is given below .

In the question ,

we have been asked how does the confidence interval help researchers to attain the purpose of using a sample to understand a population ,

we know that , the confidence interval is calculated from an estimate of how far away our sample mean is from actual population mean .

the confidence interval are useful because ,

(i) by calculating the confidence intervals around any data we collect, we have additional information about the likely values we are trying to estimate .

(ii) they make data analyses richer and help us to make more informed decisions about the research questions .

Therefore , the reason how confidence interval helps is mentioned above.

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ANSWER IT NOW!!!! Please and thanks bookie bear

Answers

Answer: 75 degrees

Step-by-step explanation:

-5x=-35 cuánto es resultado

Answers

El resultado para esto es es x=7

At a grocery store, the price of a watermelon is determined by how many pounds the watermelon weighs. The price of a watermelon that weights 9.3 pounds is $6.51. Write an equation that can be used to determine the price, p, in dollars, of any watermelon based on the number of pounds, w, the watermelon weighs. Explain the process you used to determine the equation.

Answers

The equation that can be used to determine the price, in dollars, of any watermelon based on the number of pounds is p = 0.7w

What is the equation that can be used to determine the price?

An equation is the statement that illustrates the variables given. In this case, two or more components are taken into consideration to describe the scenario.

Since the price of a watermelon that weights 9.3 pounds is $6.51, the cost per pound of watermelon will be:

= $6.51 / 9.3

= $0.7

Therefore, the equation is p = (0.7 × w) = 0.7w

where P = price

w = pound of watermelon

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While Mackenzie was sitting on a bench in the mall, 4 men with a beard and 2 men without a beard walked by. What is the experimental probability that the next man to walk by will have a beard?

Answers

The experimental probability that the next man to walk by will have a beard is 2/3

How to determine  the experimental probability that the next man will have a beard?

From the question, we have the following parameters that can be used in our computation:

Men with beard = 4

Men without beard = 2

This means that

P(Beard) = Beard/Total

Substitute the known values in the above equation, so, we have the following representation

P(Beard) = 4/6

Simplify

P(Beard) = 2/3

Hence the probability is 2/3

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Use the marginal tax rate chart to answer the question. Tax Bracket Marginal Tax Rate $0–$10,275 10% $10,276–$41,175 12% $41,176–$89,075 22% $89,076–$170,050 24% $170,051–$215,950 32% $215,951–$539,900 35% > $539,901 37% Determine the effective tax rate for a taxable income of $180,900. Round the final answer to the nearest hundredth.
19.50%
20.00%
21.11%
32.00%

Answers

For a taxable income of $1,80,900, the effective tax rate is 21.11%.

what is meant by marginal tax?

Marginal tax is the tax rate applied to an individual’s last dollar of income. It is the additional tax that must be paid on any additional income earned. In other words, it is the tax rate that applies to an individual’s income after all deductions. For example, if an individual’s income is $50,000 and the marginal tax rate is 25%, then the individual must pay an additional $12,500 in taxes on top of the $25,000 in taxes already paid on their $50,000 income.

Marginal tax rates are progressive, meaning that as an individual’s income increases, the marginal tax rate will increase as well. The marginal tax rate is important to understand because it helps individuals determine how much additional income they will need to earn in order to make up for the taxes they will have to pay on that income. It is also important to understand how marginal tax rates can affect tax planning strategies.

To determine the effective tax rate for a taxable income of $180,900, calculate the sum of the marginal tax rates for each tax bracket that the $180,900 falls into. The taxable income of $180,900 is greater than $89,075 and less than $170,050. The marginal tax rates for these two tax brackets are 22% and 24%, respectively. The sum of the marginal tax rates is 46%. Divide the sum by the taxable income of $180,900 to get the effective tax rate of 21.11%. Round the final answer to the nearest hundredth to get 21.11%.

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If you have 6 cups of flour for each recipe, how much
sugar would you need to make Juliana's and Emiliano's
brownies?

Answers

Answer:

idek

Step-by-step explanation:

Answer:

Juliana uses 1/2 amount of sugar

Emiliano uses 3/2 amount of sugar

When dividing 80 by 9, what is the remainder?

Answers

Answer:

8

Step-by-step explanation:

The number 80 is called the numerator or dividend, and the number 9 is called the denominator or divisor.

The quotient (integer division) of 80/9 equals 8; the remainder (“left over”) is 8.

80 is the dividend, and 9 is the divisor.

80/9= 8 remainder is 8

A forest ranger looking out from a ranger's station can see a forest fire at a 35 degree angle of depression. The ranger's position is 100 feet above the ground. How far is it from the ranger's station to the fire? Round your answer to the nearest tenth of a foot.

Answers

To find the distance from the ranger's station to the forest fire, we can use the tangent function and the information given in the problem. The tangent of an angle is defined as the ratio of the opposite side to the adjacent side in a right triangle. In this case, we can use the angle of depression to the forest fire, the height of the ranger's station above the ground, and the distance from the ranger's station to the forest fire to form a right triangle.

We can then use the tangent function to find the distance from the ranger's station to the forest fire as follows:

tan(35°) = opposite/adjacent

opposite = tan(35°) * adjacent

opposite = tan(35°) * 100 feet

opposite = 0.7392 * 100 feet

opposite = 73.92 feet

Therefore, the distance from the ranger's station to the forest fire is approximately 74 feet. To the nearest tenth of a foot, this is 73.9 feet.

Mary earns $28 000 a year. One week she grossed $658. 0. She had sold $1673. 19 worth of merchandise. What is the rate of her commission?.

Answers

Her commission rate is 7.44%.

What is commission rate?

The payment that is either a fixed amount or a percentage of a sale is the commission rate. When they make a sale, people in commission-based professions like insurance brokers, real estate agents, and car salespeople are compensated.

The parameters given are;

The amount Mary earns annually = $28,000

The amount Mary grossed during a week = $658.00

The amount Mary had sold during the week to make the amount grossed during the week = $1673.19

Given that Mary makes $28,000 per year

Therefore;

The amount Mary earns per week = Amount earned per year/52

The amount Mary earns per week =  $28,000/52 = $538.46

The amount extra she made on commission = $658.00- $538.46= $119.54

The commission rate = Commission earned/(Amount of merchandise sold)×100

The commission rate = 119.54/1673.19 × 100 = 7.14%

Her commission rate = 7.44%

To learn more about commission rate visit:https://brainly.com/question/20987196

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