According to shopper data, 97% of households purchase toilet paper. An analyst believes this is too low. To investigate, the analyst selects a random sample of 500 households and finds that 98% of them purchase toilet paper. We found that we do not have convincing evidence at the α = 0.05 level to conclude that the true proportion of all households that purchase toilet paper differs from 0.97. It can be difficult to detect such a small difference, such as from 0.97 to 0.98, even if the difference exists. What can be done to increase the power of this test to reject 0.97 if 0.98 is true? Check all that apply.
According to shopper data, 97% of households purchase toilet paper. An analyst believes this is too low. To investigate, the analyst selects a random sample of 500 households and finds that 98% of them purchase toilet paper. We found that we do not have convincing evidence at the α = 0.05 level to conclude that the true proportion of all households that purchase toilet paper differs from 0.97. It can be difficult to detect such a small difference, such as from 0.97 to 0.98, even if the difference exists. What can be done to increase the power of this test to reject 0.97 if 0.98 is true? Check all that apply.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
According to shopper data, 97% of households purchase toilet paper. An analyst believes this is too low. To investigate, the analyst selects a random sample of 500 households and finds that 98% of them purchase toilet paper. We found that we do not have convincing evidence at the α = 0.05 level to conclude that the true proportion of all households that purchase toilet paper differs from 0.97.
It can be difficult to detect such a small difference, such as from 0.97 to 0.98, even if the difference exists.
What can be done to increase the power of this test to reject 0.97 if 0.98 is true? Check all that apply.
![According to shopper data, 97% of households purchase What can be done to increase the power of this test to
toilet paper. An analyst believes this is too low. To
investigate, the analyst selects a random sample of 500
households and finds that 98% of them purchase toilet
paper. We found that we do not have convincing
evidence at the a = 0.05 level to conclude that the true
proportion of all households that purchase toilet paper
differs from 0.97.
reject 0.97 if 0.98 is true? Check all that apply.
increase a
decrease a
increase n
decrease n
It can be difficult to detect such a small difference, such
as from 0.97 to 0.98, even if the difference exists.
discard first results and select a separate random
sample of 500 households](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7c6d136e-2074-4849-9b3d-0df6994baeb8%2F1ecffe9a-9622-46cf-b346-2679d31f4aa3%2Fowa69n_processed.png&w=3840&q=75)
Transcribed Image Text:According to shopper data, 97% of households purchase What can be done to increase the power of this test to
toilet paper. An analyst believes this is too low. To
investigate, the analyst selects a random sample of 500
households and finds that 98% of them purchase toilet
paper. We found that we do not have convincing
evidence at the a = 0.05 level to conclude that the true
proportion of all households that purchase toilet paper
differs from 0.97.
reject 0.97 if 0.98 is true? Check all that apply.
increase a
decrease a
increase n
decrease n
It can be difficult to detect such a small difference, such
as from 0.97 to 0.98, even if the difference exists.
discard first results and select a separate random
sample of 500 households
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