The standard deviation of the ages of a sample of 16 executives from the northern states was 8.2 years; while the standard deviation of the ages of a sample of 26 executives from the southern states was 12.8 years. At α = .1, test to see if there is any difference between the variances of the ages of all the northern and all the southern executives.
there is sufficient evidence to conclude that difference between the variances of the ages of all the northern and all the southern executives.
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