Answered: 7. A new weight-watching company,…

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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Develop an effect size measure (round to 2 decimal places) for Chapter 10 question 27 shown below:

A new weight-watching company, Weight Reducers International, advertises that those who join will lose an average of 10 pounds after the first two weeks. The standard deviation is 2.8 pounds. A random sample of 50 people who joined the weight reduction program revealed a mean loss of 9 pounds. At the 0.05 level of significance, can we conclude that those joining Weight Reducers will lose less than 10 pounds?

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7. A new weight-watching company, Weight Reducers International, advertises that those who join will lose an
average of 10 pounds after the first two weeks. The standard deviation is 2.8 pounds. A random sample of
50 people who joined the weight reduction program revealed a mean loss of 9 pounds. At the .05 level of
significance, can we conclude that those joining Weight Reducers will lose less than 10 pounds? Determine the
p-value. {A:

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