Answered: Floretta, a gym owner, claims that her…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Reject H0. At the 1% significance level, the test results are not statistically significant and at best, provide weak evidence against the null hypothesis.

Reject H0. At the 1% significance level, the data provide sufficient evidence to conclude that the mean yearly new customers is more than 163 people.

Do not reject H0. At the 1% significance level, the test results are not statistically significant and at best, provide weak evidence against the null hypothesis.

Do not reject H0. At the 1% significance level, the data provide sufficient evidence to conclude that the mean yearly new customers is more than 163 people.

Floretta, a gym owner, claims that her yearly new customers are more than 163 people, on average. Several of her friends
do not believe her, so she decides to do a hypothesis test, at a 1% significance level, to persuade them. She collects data
from 25 previous years and works through the testing procedure:
167
·α = 0.01 (significance level)
The test statistic is
167 163
- 1.82
The critical value is z0.o1
2.33.
Conclude whether to reject or not reject Ho, and interpret the results.

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