Here is the problem:  homeownders claim that the mean speed of automobiles traveling on their street is greater than the speed limit of 35 miles per hour.  A random sample of 100 automobiles has a mean speed of 36 miles per hour.  Assume the population standard deviation is 4 miles.  Is there enough evidence to support the claim at beta = 0.05? Use P-value.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Hello, 

I am needing help with 7.2, Example 4- try it yourself. 

 

Here is the problem: 

homeownders claim that the mean speed of automobiles traveling on their street is greater than the speed limit of 35 miles per hour.  A random sample of 100 automobiles has a mean speed of 36 miles per hour.  Assume the population standard deviation is 4 miles.  Is there enough evidence to support the claim at beta = 0.05? Use P-value.  

 

 

The answer here only shows how to get the solution via minitab or something like that.  I would like it written out because I am getting something completely different.  

 

Thank you.  

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