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A "classic"statistics problem has students compare the average earnings of electricians and plumbers . There's such a problem in your text. We want to know if the mean income of electricians and plumbers is different. The following sample information is available to you.

		Mean ($/wk)	Std dev($)	Sample Size
	Electricians	1071.08	15.6	12
	Plumbers	1087.42	26.89	12

A) What are the null and alternative hypotheses to determine if there is a difference? (Don't worry about formatting your answer.)

B) If = .05 and if the Excel output shows that p-value = 0.086, would you reject Ho? Why or why not?

C) If = .05 and if the Excel output shows that p-value = 0.086, can we conclude there is a difference in the average incomes of electricians and plumbers ?