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2. Students may be interested in whether the cost of a TI-84 plus calculator varies from store to store. Based on surveying 40 stores with a sample mean of $85 and a sample standard deviation of $12. Before testing the claim that the population standard deviation is greater than $15, Question a: what would be the null and alternative hypotheses be? Question b: what is the number of degrees of freedom (df)? Question a: Question b:

2. Students may be interested in whether the cost of a TI-84 plus calculator varies from store to store. Based on surveying 40 stores with a sample mean of $85 and a sample standard deviation of $12. Before testing the claim that the population standard deviation is greater than $15, Question a: what would be the null and alternative hypotheses be? Question b: what is the number of degrees of freedom (df)? Question a: Question b:

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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2. Students may be interested in whether the cost of a TI-84 plus calculator varies from store to store. Based on surveying 40 stores with a sample mean of $85 and a sample standard deviation of $12. Before testing the claim that the population standard deviation is greater than $15, Question a: what would be the null and alternative hypotheses be? Question b: what is the number of degrees of freedom (df)? Question a: Question b:
Transcribed Image Text:2. Students may be interested in whether the cost of a TI-84 plus calculator varies from store to store. Based on surveying 40 stores with a sample mean of $85 and a sample standard deviation of $12. Before testing the claim that the population standard deviation is greater than $15, Question a: what would be the null and alternative hypotheses be? Question b: what is the number of degrees of freedom (df)? Question a: Question b:
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