Answered: A researcher believes that women today…

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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Case Study 13-1

A researcher believes that women today weigh less than in previous years. To investigate this belief, he randomly samples 41 adult women and records their weights. The scores have a mean of 111 lbs. and a standard deviation of 12.4. A local census taken several years ago shows the mean weight of adult women was 115 lbs.

____ 5. Refer to Case Study 13-1. The obtained value of the appropriate statistic for testing H0 is _________.

tobt = -2.07
tobt = +2.07
tobt = -0.32
tobt = +0.32

____ 6. Refer to Case Study 13-1. The df for determining tcrit = _________.

41
40
39
need more information

____ 7. Refer to Case Study 13-1. Using α = 0.01, 1-tail, the appropriate critical value is _________.

-1.684
-2.423
±1.684
±2.423

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