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MATLAB: An Introduction with Applications

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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Data show that men between the ages of 20 and 29 in a general population have a mean height of 69.3 inches, with a standard deviation of 3.1 inches. A baseball analyst wonders whether the standard deviation of heights of major-league
baseball players is less than 3.1 inches. The heights (in inches) of 20 randomly selected players are shown in the table.
Click the icon to view the data table.
Test the notion at the a 0.10 level of significance.
What are the correct hypotheses for this test?
Data table
The null hypothesis is H: o
= 3.1.
The alternative hypothesis is H,:
< 3.1.
Calculate the value of the test statistic.
72 74 71 73 76
70 77 76 72 72
77 72 75 70 73
74 75 73 74 73
2- (Round to three decimal places as needed.)

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the null and alternative hypothesis
? = 60?2+39X Calculate the mean (expected value) of the random variable

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