For each of the following situations, identify the response variable and the populations to be compared, and give I, the ni, and N.
(a) A poultry farmer is interested in reducing the cholesterol level in his marketable eggs. He wants to compare two different cholesterol-lowering drugs added to the hen's standard diet as well as an all-vegetarian diet. He assigns 35 of his hens to each of the three treatments.
Response variable:
caloric intake
egg cholesterol level
diet cholesterol level
number of hens
number of marketable eggs laid
Populations: (Select all that apply.)
all eggs laid on a farm
hens on an all-vegetarian diet
all hens on a farm
hens on a standard diet and receiving one of two cholesterol-lowering drugs
eggs with different cholesterol levels
I =
n1 =
n2 =
n3 =
N =
(b) A researcher is interested in students' opinions regarding an additional annual fee to support non-income-producing varsity sports. Students were asked to rate their acceptance of this fee on a five-point scale. She received 93 responses, of which 32 were from students who attend varsity football or basketball games only, 18 were from students who also attend other varsity competitions, and 43 who did not attend any varsity games.
Response variable:
varsity sport played
number of students who attend varsity games
number of games attended
acceptance rating on a five-point scale
amount of annual fee paid
Populations: (Select all that apply.)
students who pay an annual fee
students who do not attend any varsity games
students who play sports
students who attend varsity football or basketball games
students who attend other varsity competitions
I =
n1 =
n2 =
n3 =
N =
(c) A professor wants to evaluate the effectiveness of his teaching assistants. In one class period, the 48 students were randomly divided into three equal-sized groups, and each group was taught power calculations from one of the assistants. At the beginning of the next class, each student took a quiz on power calculations, and these scores were compared.
Response variable:
course gradequiz score
rating of the professor on a five-point scale
rating of the assistant on a five-point scale
number of questions on the quiz
Populations: (Select all that apply.)
students in the three TA groups
students passing the course
all students at the school
the three teaching assistants
students who like their TA
I =
n1 =
n2 =
n3 =
N =

Answers

Answer 1

Answer:

Kindly check explanation

Step-by-step explanation:

POPULATION :

hens on an all-vegetarian diet

hens on a standard diet and receiving one of two cholesterol-lowering drugs

RESPONSE : cholesterol level

I = 3

n1 = 35

n2 = 35

n3 = 35

N = (35 + 35 + 35) = 105

2.)

RESPONSE :

Acceptance rating on a five-point scale

POPULATION :

Students who attend varsity football or basketball games

students who attend other varsity competitions

Student who do not attend any varsity games

I = 3

n1 = 32

n2 = 18

n3 = 43

N = (32 + 18 + 43) = 93

3.)

RESPONSE :

course gradequiz score

POPULATION :

Students in the three TA group

I = 3

Since, the samples were divided equally into 3, hence we have 48 / 3 16 per group

n1 = 16

n2 = 16

n3 = 16

N = 48


Related Questions

he perimeter of a triangle is 240 feet. The second side is twice as long as the first side. The third side is 40 feet more than the first side. Find the measure of the first side. *

Answers

Answer:

66 2/3

Step-by-step explanation:

Let x be the length of the first side

Length of first side: x

Length of second side: 2x

Length of third side: x + 40

x + 2x + x + 40 = 240

3x = 240-40

3x = 200

x = 200/3

x = 66 2/3 (this is a mixed fraction)

help meee plzzzz
i dont know what this is

Answers

The answer is D, always remember SOH CAH TOA :)

Help plz:)))I’ll mark u Brainliest

Answers

[tex]\frac{245 g SO2 }{} \frac{1 mol SO2 }{64.07 g SO2} \frac{1 mol H2SO3}{1 mol SO2 } \frac{82.09 g H2SO3}{1 mol H2SO3} =314 g H2SO3[/tex]

Step-by-step explanation:

2) What mass of Sulfurous acid is produced, when 245g of Sulfur Dioxide is

reacted with water?  

H2O  +  SO2  →   H2SO3

               ↓                ↑  

              mol   →     mol

          SO2           H2SO3

\frac{245 g SO2 }{} \frac{1 mol SO2 }{64.07 g SO2} \frac{1 mol H2SO3}{1 mol SO2 } \frac{82.09 g H2SO3}{1 mol H2SO3} =314 g H2SO3

If you want to find how much liquid a container will hold, you want to find the _____.

area
circumference
square feet
volume

Answers

Answer:

volume

Step-by-step explanation:

Volume
This is because volume is finding out how much space a 3d figure occupies inside.

Have a nice day

find the axis of symmetry of the parabola

Answers

answer:
x = -1

step-by-step explanation:
it is on the x-axis and it is -1

MATHEMATICS helpp
please giving brainliest

Answers

Answer:

360 cm^3

Step-by-step explanation:

Since the height of the block must be 6cm, and the length is 10cm, and the depth is 6cm, the volume must be 6 * 10 * 6 = 360cm^3

Solve for x then find the measure of arc GF.

Answers

Answer:

Step-by-step explanation:

180 = x + 135 + x + 65

-20 = 2x

-10 = x

x = -10

GF = 55°

A hospital directed collects data on birth weight of newborn babies born in the maternity ward the Director find that the birth weights are approximately normally distributed with a mean of 3300 grams and a standard deviation of 525 grams the empirical rule states that in a normal distribution 68% of values are within one standard deviation of the mean 95% of values are within two standard deviation of the mean and 99.7% of values are within three standard deviations of the mean based on empirical rule what percent of newborn babies born in the maternity wing of this hospital can be expected to have birth weight greater than 2250 grams

Answers

Answer:

97.5% of newborn babies born in the maternity wing of this hospital can be expected to have birth weight greater than 2250 grams.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

The normal distribution is symmetric, which means that 50% of the values are below the mean and 50% are above.

In this problem, we have that:

Mean of 3300, standard deviation of 525.

What percent of newborn babies born in the maternity wing of this hospital can be expected to have birth weight greater than 2250 grams?

2250 = 3300 - 2*525

2250 is 2 standard deviations below the mean.

Of the 50% of the weights below the mean, 95% are going to be greater than 2250(less than 2 standard deviations of the mean).

Of the 50% of the weights above the mean, 100% are going to be greater than 2250.

So

[tex]p = 0.5*0.95 + 0.5 = 0.975[/tex]

0.975*100% = 97.5%

97.5% of newborn babies born in the maternity wing of this hospital can be expected to have birth weight greater than 2250 grams.

Use the model to represent 80% as a fraction in simplest form.
0 A 9
10
O
В.
83
100
O
C.
4
5
o
D.
15
20

Answers

Answer: 45.

Step-by-step explanation:

Answer:

80% of 100 in fraction form is 4/5

Step-by-step explanation:

Blake drew a circle with an area of 1256 cm2. What is the diameter of that circle?

Answers

The problem that you are having the most hardest time on the diameter of the circle is 39.99

At a game show, there are 7 people (including you and your friend) in the front row.

The host randomly chooses 3 people from the front row to be contestants.

The order in which they are chosen does not matter.

There are 7C3=35 ways to choose the 3 contestants.

What is the probability that you and your friend are both chosen?

A. 2/3
B. 5/35
C. 2/35
D. 3/35

Answers

Answer:

I think it is B

Step-by-step explanation:

Sorry if it is wrong

The probability that the person and his friends are chosen is  5/35, the correct option is B.

What is Probability?

Probability is the likeliness of an event to happen.

There are 7 people (including you and your friend) in the front row.

The host randomly chooses 3 people from the front row to be contestants.

The ways that you both will be chosen is given by  ²C₂

The ways in which one more person will be chosen from the rest 5 people  is given by

⁵C₁

The number of ways in which the person and his friend is chosen along with the other one person is given by

⁵C₁ * ²C₂ = 5

The ways in which 3 contestants will be chosen from 7 people is 35

So, Probability = 5/35

To know more about Probability

https://brainly.com/question/11234923

#SPJ5

SOMEONE PLEASE HELP ANYONE !

Answers

Answer:

x² - y²

Step-by-step explanation:

√x⁴ =x²

= x² - y²

A report from 2015 claims that the average salary of a server is $12 per hour. You collect data from a random sample of 30 servers in Atlanta and calculate the average salary for servers from your sample to be $11.00 with a standard deviation of $2.80. Conduct a hypothesis test to determine if the true average hourly wage of a server is different than the claim of $12.

Answers

Answer:

Since the calculated value z= -1.956 does not lie in the critical region z= ± 1.96  we conclude that  true average hourly wage of a server is not different than the claim of $12.

Step-by-step explanation:

The null and alternate hypotheses are

H0: u= 12 against the claim Ha: u≠ 12

Taking significance level alpha = 0.05

The critical region is z= ± 1.96 for two tailed test

The sample size = n= 30

The sample mean = 11

Sample standard deviation= 2.80

Applying z- test

Z= x-u/s/√n

z= 11-12/2.8/√30

z= -1/0.5112

z= -1.956

Since the calculated value z= -1.956 does not lie in the critical region z= ± 1.96  we conclude that  true average hourly wage of a server is not different than the claim of $12.

Marcus weighs 45.5 kg what is his weight in grams​

Answers

Answer: 45500

Step-by-step explanation: 45.5*1000, 1 kg=1000g

Answer:

45500

Step-by-step explanation:

please comment on his

what is the answer for a+b-c?​

Answers

lol





Hehe
Lollvebnzkzzk have ever

Yep

what is 10.1 = 8+7m plsssssss i neeed help

Answers

Answer:

m= 0.3

Step-by-step explanation:

10.1 = 8 + 7m

-8     -8

2.1 = 7m

2.1/7 = 0.3

Answer:

Subtract  8  from both sides of the equation

Simplify

Divide both sides of the equation by the same term

m=0.3

‼️‼️‼️‼️‼️PLEASEEE HURRY ‼️‼️‼️‼️ Use the drop-down menus to explain how to determine the angle measures of any triangle that is
similar to triangle DEF. Click the arrows to choose an answer from each menu.

Answers

Answer:

Step-by-step explanation:

70 115 180-25

1. 5 times a number decreased by 12 equals 62. What is the number?
Equation:
Solution:

2. One-half of a number is 8. What is the number?
Equation:
Solution:

help me please..tnx​

Answers

Equation: 5x-12=62
Solution: x=14.8

Equation: n/2=8
Solution: 16

You went out to lunch with three friends and your subtotal was $42 not including the sales tax of 6%.

Calculate what the total bill would be with the sales tax.

Answers

Answer:

It's DEFINITELY 2.52

Step-by-step explanation:

Change 6% to a decimal, which will be .06! Times $42 Times.06 and you'll end with the answer $2.52 !!!

Ajogger goes 0.3 km east and then turns south. If the jogger finishes 0.5 km from the starting point, how far south did the jogger go?

Answers

Answer:

he went 0.2km south

Step-by-step explanation:

Answer:

He went 0.2km south.

Step-by-step explanation:

Your welcome!

The normal curve shown represents the sampling distribution of a sample mean for sample size n = 25, selected at random from a population with standard deviation \sigma_xσ x ​ . Which of the following is the best estimate of the standard deviation of the population, \sigma_xσ x ​ ?

Answers

The best estimate of the standard deviation of the population is 75

How to determine the estimate of the standard deviation of the population?

The given parameter is:

Sample size, n

The estimate of the standard deviation of the population is calculated using:

[tex]\sigma_x = \frac{\sigma}{\sqrt n}[/tex]

This gives

[tex]\sigma_x = \frac{\sigma}{\sqrt 25}[/tex]

Evaluate the square root

[tex]\sigma_x = \frac{\sigma}{5}[/tex]

Multiply both sids by 5

[tex]\sigma = 5\sigma_x[/tex]

From the normal curve, we have:

[tex]\sigma_x = 15[/tex] -- the difference between the scores

So,we have:

[tex]\sigma = 5 * 15[/tex]

[tex]\sigma = 75[/tex]

Hence, the estimate of the standard deviation of the population is 75

Read more about standard deviation at:

https://brainly.com/question/15858152

please help me i don’t have much long on this test

Answers

Answer:

C. 248 square meters

Step-by-step explanation:

2(10 x 6) + 2(10 x 4) + 2(6 x 4)

= 120 + 80 + 48

= 248 [tex]m^2[/tex]

Answer:

c. 248

Step-by-step explanation:

2(6×4 + 10×4 +10×6) = 248

Find out how long it takes a $2900 investment to double if it is invested at 9% compounded quarterly. Round to the nearest tenth of a year.

Answers

Answer:

7.8 years

Step-by-step explanation:

Formula

[tex]PV(1+\frac{i}{n})^{nt}[/tex]

we have

[tex]2900(1+\frac{.09}{4})^{4t}=5800\\1.0225^{4t}=2\\4t=log_{1.0225}2\\4t=31.1518\\t=7.787957[/tex]

Which rounds to

7.8

5) There are six boys and six girls in a class.
The teacher randomly selects one student
to answer a question. Later, the teacher
randomly selects a different student to
answer another question. The first student
is a boy and the second student is a girl.

Answers

Answer:

the probability is here down hope you will see

Help what’s the answer

Answers

the answer is 474 i believe

Use the completing the square method to transform the equation 2.2 + 2x = 13 into an equation of the form
(2 + a)? = b, where Q and bare real numbers. What are the values of Q and br?

Answers

Answer:55

Step-by-step explanation:

please help me........

Answers

Answer:

it's in the link on the other comment

Step-by-step explanation:

it's in the link on the other comment

What is the system of linear equations graphed below?

Answers

Answer:

It's:

y = [tex]-\frac{1}{2}x + 1[/tex]

y = -2x - 4

Hope this helps!

Answer
y=-2x+1
y=-1/2x-4

Find the area of the shaded region to the nearest tenth

Answers

Answer:

B.   A = 119.1 in.²

Step-by-step explanation:

A = area of trapezoid - area of circle

A = ½(b1 + b2)h - πr²

A = [½(27 + 12)(14) - 3.14159(7²)] in.²

A = 119.1 in.²

Find the circumference of the coin. Use 3.14 or 22/7 for pi. Remember to have the correct units.
1) Show work on how you got your answer!
2) NO LINKS!
3) NO silly answers!
~Hocus Pocus

Answers

Answer: 12.56 cm

Step-by-step explanation:

Pi looks like this π or 3.14 or 22/7

A formula for circumference is: C = 2π r

The radius or r listed in the diagram is 2cm.

1) Plug r into the equation...

C = 2π 2

2) Simplify the equation

C = 4π

3) You can insert 4π to be exact in a calculator or do 4 x 3.14 (its still the same thing but you have to round if you are using this π)

However both answers come out to be 12.56

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