A psychologist has developed an aptitude test which consists

A psychologist has developed an aptitude test which consists of a series of mathematical and vocabulary problems. They want to test the hypothesis that the mean test score is 75.

A random sample of 40 people have taken the test and their results recorded:

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You may find this Student\'s t distribution table useful throughout this question.

a)Calculate the test statistic (t) for the hypothesis test. Give your answer to 4 decimal places.

t =

b)At a level of significance of ? = 0.05, the result of this test is that the null hypothesis is

59	77	63	83	68	56	91	72	78	74
46	76	87	89	59	64	61	42	54	88
60	59	66	57	89	54	94	75	68	42
49	67	77	96	73	64	66	63	94	54

(a)

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(b) Reject Ho.

75.000	hypothesized value
68.850	mean Data
14.722	std. dev.
2.328	std. error
40	n
39	df

-2.64	t
.0118	p-value (two-tailed)

A psychologist has developed an aptitude test which consists of a series of mathematical and vocabulary problems. They want to test the hypothesis that the mean

A psychologist has developed an aptitude test which consists

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59	77	63	83	68	56	91	72	78	74
46	76	87	89	59	64	61	42	54	88
60	59	66	57	89	54	94	75	68	42
49	67	77	96	73	64	66	63	94	54

59	77	63	83	68	56	91	72	78	74
46	76	87	89	59	64	61	42	54	88
60	59	66	57	89	54	94	75	68	42
49	67	77	96	73	64	66	63	94	54

59	77	63	83	68	56	91	72	78	74
46	76	87	89	59	64	61	42	54	88
60	59	66	57	89	54	94	75	68	42
49	67	77	96	73	64	66	63	94	54