It is desired to prove that the variations of the high temperatures in Des Moines are greater than the variations of the high temperatures in Spokane, for this purpose a sample of the daily high temperatures during the summer was taken. Use significance level 10 %

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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It is desired to prove that the variations of the high temperatures in Des Moines are greater than the variations of the high temperatures in Spokane, for this purpose a sample of the daily high temperatures during the summer was taken. Use significance level 10 % 

Des Moines Spokane
83 78
91 82
94 81
89 77
89 79
96 81
91 80
92 81
82 79
93 80
90  
93
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