The average monthly cell phone bill was reported to be $50.07 by the U.S. Wireless Industry.  Random Sampling of a large cell phone company found the following monthly cell phone charges (in dollars): 55.45 44.99 62.99 70.63 60.01 54.54 48.91 50.49 58.61 51.97                                                                                                                                                                                                                                                At the 0.01 level of significance, can it be concluded that the average phone bill has changed?

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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The average monthly cell phone bill was reported to be $50.07 by the U.S. Wireless Industry. 

Random Sampling of a large cell phone company found the following monthly cell phone charges (in dollars):

55.45 44.99 62.99 70.63

60.01 54.54 48.91 50.49

58.61 51.97                                   

                                                                                                                                                                                                           

At the 0.01 level of significance, can it be concluded that the average phone bill has changed?

 

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In this case, p-value is greater. So null hypothesis should not be rejected, correct?

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