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 25 executives from the southern states was 12.8 years. At ? = .1, test to see if there is any difference between the variances of the ages of all the northern and all the southern executives


Since F = 2.44 > 2.28 (p-value is between .05 and .1), reject H0.

Business

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Indicate whether the statement is true or false

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Personal defenses are effective against all holders, whether or not the holder is a holder in due

course. Indicate whether the statement is true or false

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The waterfall approach is used most often for:

A) well-defined projects B) projects whose changes tend to be minor C) projects with step-by-step progress D) controlling projects E) all of the above

Business