A journal reported that the average screen time of teenagers is 6.77 hours per week. You gathered 30 independent samples from your class and obtained an average screen time of 7.8 hours per week, with a sample standard deviation of 2.9 hours. At alpha = 0.10, is this enough evidence to say that the average screen time of your class is higher than the reported screen time? What is the mean value for the null hypothesis?

A journal reported that the average screen time of teenagers is 6.77 hours per week. You gathered 30 independent samples from your class and obtained an average screen time of 7.8 hours per week, with a sample standard deviation of 2.9 hours. At alpha = 0.10, is this enough evidence to say that the average screen time of your class is higher than the reported screen time? What is the mean value for the null hypothesis?

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 58E: What is meant by the sample space of an experiment?

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