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Stella [2.4K]
3 years ago
14

A program was created to randomly choose customers at a clothing store to receive a discount. The program claims 22% of the rece

ipts will get a discount in the long run. The owner of the clothing store is skeptical and believes the program's calculations are incorrect. He selects a random sample and finds that 17% received the discount. The confidence interval is 0.17 ± 0.05 with all conditions for inference met.
Part A: Using the given confidence interval, is it statistically evident that the program is not working? Explain. (3 points)
Part B: Is it statistically evident from the confidence interval that the program creates the discount with a 0.22 probability? Explain. (2 points)
Part C: Another random sample of receipts is taken. This sample is five times the size of the original. Seventeen percent of the receipts in the second sample received the discount. What is the value of margin of error based on the second sample with the same confidence level as the original interval? (2 points)
Part D: Using the margin of error from the second sample in part C, is the program working as planned? Explain. (3 points)
Mathematics
1 answer:
zysi [14]3 years ago
6 0

Answer:

this was a long time ago

Step-by-step explanation:

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5. The owners of a two-person business make their decisions independently of each other and then compare their decisions. If the
melamori03 [73]

Answer:

A. 0.42

B. 0.12

C. 0.45

Step-by-step explanation:

A. The probability that they make the right decision on the first try

First person = 60%

Second person = 70%

= 60% * 70%

= 0.42

B. Probability that they make wrong decision

= Wrong decision from first person * wrong decision from second person

Wrong decision = 1- right decision

= 1-0.60 * 1-0.70

= 0.40x0.30

= 0.12

3. Probability they delay decision

= 0.60(1-0.60)+0.70(1-0.70)

= 0.60x0.40 + 0.70x0.30

= 0.24+ 0.21

= 0.45

6 0
3 years ago
Principal amount $10,000
Burka [1]
The answer will be $13,439.16
3 0
4 years ago
HELP!!!! Due tomorrow don't get
PSYCHO15rus [73]
On all of them? Which  numbers?

8 0
3 years ago
Write an equation to model the situation and
DENIUS [597]

Answer:

Step-by-step explanation:

I think 65 divided by 625 is 104 phones jill sold srry if I’m wrongI’m just a kid trying to figure out all this work

3 0
3 years ago
Select each pair of functions that are inverses of each other:
Ganezh [65]

Option first, and option second represent the function;  f(x) and g(x) are inverses of each other option first, and option second are correct.

<h3>What is a function?</h3>

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

We have a shown function in the picture.

As we know if the function f(x) has double ordered (x, y) that satisfies the function.

Then it's inverse of a function g(x) must have ordered pair (y, x)

f(x) = {(-5,-9), (-3, -4), (0, 1), (3, 7), (6, 13)}

g(x) = {(-9,-5), (-4,-3), (1, 0), (7,3), (13,6)}

As we can see in the f(x) and g(x) they both have ordered pair (x, y) in f(x) and (y, x) in the g(x).

The f(x) and g(x) are inverses of each other.

f(x) = x + 7

g(x) = x - 7

To find the inverse of f(x)

Interchange the value of f(x) and x

x → g(x)

f(x) → x

x = g(x) + 7

g(x) = x -7

The f(x) and g(x) are inverses of each other.

The table does not represent any relation that shows that the f(x) and g(x) are inverses of each other.

Thus, option first, and option second represent the function;  f(x) and g(x) are inverses of each other option first, and option second are correct.

Learn more about the function here:

brainly.com/question/5245372

#SPJ1

4 0
2 years ago
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