Problem

Place bounds on the p-value in Exercise 10.30.Exercise 10.30A study of potential age discr...

Place bounds on the p-value in Exercise 10.30.

Exercise 10.30

A study of potential age discrimination considers promotions among middle managers in a large company. The data as follows:

	Age
	Under 30	30–39	40–49	50 and Over	Total
Promoted	9	29	32	10	80
Not promoted	41	41	48	40	170
Totals	50	70	80	50

Minitab output follows:

a. Find the expected numbers under the hypothesis of independence.
b. Justify the indicated degrees of freedom.
c. Is there a statistically significant relation between age and promotions, using α = .05?

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