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A researcher claims that the average cost of men’s athletic shoes is less than $80. He selects a ran

Question: A researcher reports that the average salary of assistant professors is $42,000. A sample of 40 assistant professors salaries is listed below. At the $\alpha =0.05$ test the claim that assistant professors earn $42,000 a year.

39	47	34	41	35	49	34	40
49	48	46	42	43	39	42	39
38	38	34	46	43	49	43	41
33	50	35	41	45	42	43	44
38	38	39	40	39	46	47	38

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A researcher claims that the average cost of men’s athletic shoes is less than $80. He selects a ran

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39	47	34	41	35	49	34	40
49	48	46	42	43	39	42	39
38	38	34	46	43	49	43	41
33	50	35	41	45	42	43	44
38	38	39	40	39	46	47	38

39	47	34	41	35	49	34	40
49	48	46	42	43	39	42	39
38	38	34	46	43	49	43	41
33	50	35	41	45	42	43	44
38	38	39	40	39	46	47	38

39	47	34	41	35	49	34	40
49	48	46	42	43	39	42	39
38	38	34	46	43	49	43	41
33	50	35	41	45	42	43	44
38	38	39	40	39	46	47	38