Ten randomly volunteers tested a new diet. Mean weight before an d after the diet were obtained.The Obtained mean weight before the diet was 65.4 kg with the standard deviation of 7.8 kg, whileafter the diet mean weight was 62.8 kg with standard deviation of 6.3 kg. At the 0.01 level ofsignificance, test the claim that the diet is effective; that is, the weighs become lower after diet.

Answered: Ten randomly volunteers tested a new…

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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A researcher tests whether listening to music while taking an exam has any effect. The population mean of people taking an exam while not listening to music is 50, with a standard deviation of 12. The researcher tests a sample of 57 people who listen to music while taking an exam and they produce a mean of 54.36. Using a one-tailed test with a p value of .05, the critical value is -1.65 and 1.65. Make a decision about your hypothesis.
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