average, college freshmen spend 7.5 hours a week going to parties. One administrator does not believe that these figures apply at her college, which has nearly 3,000 freshmen. She takes a simple random sample of 100 freshmen and interviews them. On average, they report 6.6 hours a week going to

average, college freshmen spend 7.5 hours a week going to parties. One administrator does not believe that these figures apply at her college, which has nearly 3,000 freshmen. She takes a simple random sample of 100 freshmen and interviews them. On average, they report 6.6 hours a week going to

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.7: Probability

Problem 6E: List the sample space of each experiment. Tossing three coins

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Question

A newspaper article says that on average, college freshmen spend 7.5 hours a week
going to parties. One administrator does not believe that these figures apply at her
college, which has nearly 3,000 freshmen. She takes a simple random sample of 100
freshmen and interviews them. On average, they report 6.6 hours a week going to
parties, and the SD is 9 hours. Carry out all the steps of performing a one-sample z test,
and state your conclusion

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