Answered: At one school, the average amount of…

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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Question

At one school, the average amount of time that tenth-graders spend watching television each week is 21.6 hours. The principal introduces a campaign to encourage the students to watch less television. One year later, the principal wants to perform a significance test to determine whether the average amount of time spent watching television per week has decreased. The hypotheses are:
H₀: μ = 21.6 hours
H_A: μ < 21.6 hours
Explain the meaning of a correct decision.

Choose the best answer below:

A. Concluding that μ = 21.6 hours when in fact μ < 21.6 hours

B. Concluding that μ < 21.6 hours when in fact μ = 21.6 hours

C. Concluding that μ > 21.6 hours when in fact μ < 21.6 hours

D. Failing to reject the hypothesis that μ = 21.6 hours when in fact μ = 21.6 hours OR concluding that μ < 21.6 hours when in fact μ < 21.6 hours

E. Failing to reject the hypothesis that μ = 21.6 hours when in fact μ < 21.6 hours

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