MATH225N

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MATH 225N: Week 7 Assignment, Hypothesis Test for the Mean-Polution Standard Deviation (Q&A) Latest Updated 2023
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21

April 2023

2022/2023

A+
Question Jamie, a bowler, claims that her bowling score is less than 168 points, on average. Several of her teammates do not believe her, so she decides to do a hypothesis test, at a 1% significance level, to persuade them. She bowls 17 games. The mean score of the sample games is 155 points. Jamie knows from experience that the standard deviation for her bowling score is 19 points. H0: μ≥168; Ha: μ<168 α=0.01 (significance level) What is the test statistic ( z-score) o...
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