Answer:
The test statistic is z = -2.82.
Step-by-step explanation:
A marketing research firm believes that more than half of adults drink mostly either regular or diet soda.
This means that the null hypothesis is: [tex]H_{0} = 0.5[/tex]
The alternate hypothesis is: [tex]H_{a} > 0.5[/tex]
The test statistic is:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample.
0.5 tested at the null hypothesis:
This means that:
[tex]\mu = 0.5, \sigma = \sqrt{0.5*0.5} = 0.5[/tex]
Gallup took a nationally representative sample of 2027 adults and asked them about their soda consumption. The survey shows that 950 of those surveyed drink mostly either regular or diet soda.
This means that [tex]n = 2027, X = \frac{950}{2027} = 0.4687[/tex]
Test statistic:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]z = \frac{0.4687 - 0.5}{\frac{0.5}{\sqrt{2027}}}[/tex]
[tex]z = -2.82[/tex]
The test statistic is z = -2.82.
What is the approximate length of the base of the parallelogram in the diagram?
Answer:
2piR
Step-by-step explanation:
The base of the parallelogram is equal to the circumference.
The length of the base of the parallelogram will be πr.
What is Parallelogram? What is triangle? What is a expression? What is a mathematical equation?In Euclidean geometry, a parallelogram is a simple quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure.A triangle is a polygon with three edges and three vertices. The sum of all the angles of a triangle is 180 degrees. Mathematically - ∠x + ∠y + ∠z = 180°There are different types of triangles such as - equilateral triangle , scalene triangle , isosceles triangle etc.A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions.We have a circle converted into a parallelogram as shown.
The angle subtended by each arc at the center =
Ф = (360°/8) = 45°
Length of each arc will be -
L = (Ф/360°) x 2πr
L = (45/360) x 2πr
L = (5/40) x 2πr
L = 1/8 x 2πr
L(A) = πr/4
Length of the base will be -
L(B) = 4 x L(A) = 4 x πr/4 = πr
Therefore, the length of the base of the parallelogram will be πr.
To solve more questions on 2 -D figures, visit the link below-
brainly.com/question/25950519
#SPJ2
Helps, also explain how to do it I want to learn how and stop using brainy
Answer:
259
Step-by-step explanation:
USE PEMDAS
Parenthesis
Exponent
Multiplication
Division
Addition
Subtraction
Two swim clubs are having a membership sale. Aqua Plus is offering a two-year membership for $479.76. Water
World is offering an 18-month membership for $350.00. Which describes the swim club that has the lower-priced
offer?
O Aqua Plus has the lower cost of $239.88 per year
O Water World has the lower cost of $239.88 per year.
O Aqua Plus has the lower cost of $19.44 per month
Water World has the lower cost of $19.44 per month
Answer:
option d is correct
Step-by-step explanation:
hope this helped
Answer:
D
Step-by-step explanation:
Edge 2019
Help pleaseee is for nowwww
Answer:
your bo**bs are so far wooooooooooooooooow!!!!
Keisha is babysitting at $8 per hour to earn money for a car. So far she has saved $1300. The car that Keisha wants to buy costs at least $5440. Write and solve an inequality to determine the amount Keisha still needs to earn for the car.
Answer:
$4100
Step-by-step explanation:
For Kaisha to get this car we have these information available
Amount saved = $1300
The cost of the car = $5400
Let The amount left to complete the car = k
We have this equation
K + $1300 = $5400
K = 5400 - 1300
K = 4100
Therefore Kaisha still needs to earn an additional amount of $4100 for the total amount of the car to be completed.
a profit of 24% was made wheb a book was sold for birr 34% find the selling price that would have given a profit 28%
Answer:
$35.20
Step-by-step explanation:
Given that the profit of 24% was made on $34.10,
And Profit = Selling price - cost price,
Where profit is 24%, and selling price is $34.10, cost price = ?
Then, to find the cost price (z):
Assume the cost price be a 100% and the selling price of $34.10 be 124%
Hence, we have
$34.10 = 124%
z = 100%
Substitue
=> z / 34.10 = 100% / 124 %
=> 124z = 34.10 (100)
124z = 3410
Divide both sides by the coefficient of z which is 124
z = $27.50
Therefore, to find the selling price for a profit of 28%
We have 28% of 27.5 = 7.70
With equation of Profit = Selling price - cost price
We have 7.70 = Selling price - 27.50
Removing 7.7 from both sides
We have, Selling price = 27.50 + 7.70
=> Selling price = $35.20
Hence, the selling prices for a profit of 28% is $35.20
need help geometry question central angles and arcs ??? pls help
Answer:
45°
Step-by-step explanation:
180 (half a a circle) + 135 = 315
360 - 315 = 45
Shade 50% of the figure
Answer:
All you have to so is shade in 2 mini squares and your good
Use the Distributive Property to
REWRITE 11(x + 5)
Answer:
11X+55
Step-by-step explanation:
Multiplicacion
Hello! I was trying to Do 69x24 but it is sadly not giving helpful tips so I was wondering if you can help me step by step?
A rectangle has a length of (x+3) centimeters and a width of 1/2x centimeters. If the perimeter is 24 cm, what is the length of the rectangle?
Answer:
17
Step-by-step explanation:
(X+3)+½x=24
1½x+3=24
1½x=24-3
1½x=21
x=14.
Length=14+3=17
What is the surface area?
40 m
32 m
40 m
48 m
40 m
square meters
i don’t need a explanation i just need a answer pls hurry!!
Answer:
6,656 square meters
Step-by-step explanation:
Surface area of triangular pyramid = bh + L(S1 + S2 + S3)
Where,
b = 48 m
h = 32 m
L = 40 m
S1 = 40 m
S2 = 40 m
S3 = 48 m
Plug in the values
Surface area = 48*32 + 40(40 + 40 + 48)
= 1,536 + 5,120
= 6,656 m²
Please Help me!!! with this problem
9514 1404 393
Answer:
D 120
Step-by-step explanation:
We are given the relation ...
48 = 0.40 × sales
Dividing by 0.40 gives the sales for the day.
sales = 48/0.40 = 120
120 milkshakes were sold that day.
To draw a line that is parallel to 9x+12y=16, what should the slope of the line be?(1 point)
A. 4/3
B. -3/4
C. -4/3
D. 3/4
Answer:
Hi how are you doing today Jasmine
Quincy measured a picnic area near the river and made a scale drawing. He used the scale 1 inch : 10 yards. In the drawing, the picnic area is 17 inches long. What is the length of the actual picnic area?
Answer:
170 yards
Step-by-step explanation:
1:10
2:20
3:30
4:40
5:50
6:60
7:70
8:80
9:90
10:100
11:110
12:120
13:130
14:140
15:150
16:160
17:170
or you could just use fractions or find the formula
the formula for this equation: number of yards = number of inches times ten
Assume that a simple random sample has been selected and test the given claim.Claim: The average age of actresses when they win an acting award is more than 34 years oldTo test this claim a simple random sample (SRS) of 27 actresses is used. This sample of 27 actresses had a sample mean of 31.4 years and a standard deviation = 11.2 years. Assume the the distribution of actresses ages is approximately normal.Select all TRUE statements from those given below..For this hypothesis test; H0: ? 34 H1: ?>342. The correct decision is to "support" (fail to reject) the null hypothesis H0.3. We decide to reject the claim that the average age of actresses when they win an acting award is more than 34 years old.4. For this hypothesis test, the P-value = .8815. For this hypothesis test, the test statistic is t = -1.21
Answer:
how big is your noodle
Step-by-step explanation:
HELP PLEASE DUE IN 4 MINUTES
If AB is parallel to CD and the slope of AB is -3, what is the slope of CD?
8) How many terms of the arithmetic sequence (2, 4, 6, 8, ...} will give a sum of 600?
PLZ ANSWER
Answer:
I believe the answer is 300
Step-by-step explanation:
If a Tv costs $910 and the sales tax is $80, how much will the TV cost in total?
Answer:
$1,638.00
Step-by-step explanation:
Before Tax Price: $910.00
Sale Tax: 80.00% or $728.00
After Tax Price: $1,638.00
There Are The Before And After :D!!
What is the value of x?
Enter your answer in the box.
x =
10x - 20 + 6x + 8 = 180
16x - 12 = 180
16x = 192
x = 12
hope this helps...!!!
Step-by-step explanation:
The value of x is 12.
Please help me I love u
A quality report for a production line shows a score of 59 points on a 65-point inspection test. A passing score is 95% compliance. Did the production line pass inspection?
Answer:
the production line did not pass
Step-by-step explanation:
8*10^4 is how many times as large as 4*10^-5
If I lost 4% of 100 pencils an 6% of 200 pens how many pencils do I have left and how many pens do I have left?
please answer this correctly without making mistakes.I want ace,experts and genius people to answer this correctly without making mistakes
add q and 5, add 2 to the result, then add what you have to 4
Answer:
q+11
Step-by-step explanation:
you have q and you add 5
q+5
they want you to now add 2
q+5 +2
5+2=7
q+7
now add 4
q+7+4
7+4=11
the final answer is q+11
Round 796,154 to nearest 100,000
Answer:
800,000
Step-by-step explanation:
The 9 makes the 7 round up making it 800,000.
Answer:
I'm pretty sure it's 800,000!
Step-by-step explanation:
Since 9 is larger than 5, you're rounding up. This would cause 7 to be rounded up to 8, making it 800,000!
2/6+1/4
Show work please
And no links
Answer:
7/12
Step-by-step explanation:
1/3+1/4
convert to twelfths
4/12+3/12
7/12
Answer:
7/12
Step-by-step explanation:
2/6 + 1/4
Change the denomintors to be alike (Change the denominators to 12) 4/12 + 3/12
Multipy the top and bottom
Add
Get 7/12
Brainliest?
I need helpppppppp plssssssssss
Please help for today
Answer:
football and soccer looks right :)
Step-by-step explanation: