Compute degrees of freedom of a suitable t-statistic

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Reference no: EM13114327

In a study of the effect of oral contraceptives (OCs) on blood pressure, measurements were made on 10 OC users (x) and 14 non-users (y). From these we calculate = 129.44; = 122.65; sx = 9.15; sy = 11.02. The pooled estimate of the standard deviation s is (2dp):

(a) 105.72 (b) 106.01 (c) 10.30 (d) 10.28 (e) 10.26

To test H0: against the alternative H1: in Q 1.5 above, the degrees of freedom of a suitable t-statistic is:
(a) 24 (b) 4 (c) 12 (d) 22 (e) 23

In a study of the effect of oral contraceptives (OCs) on blood pressure, measurements were made on 10 OC users (x) and 14 non-users (y). From these we calculate = 129.44; = 122.65; sx = 9.15; sy = 11.02. Perform the test H0: against the alternative H1: , using the two sample t-test, and state any assumptions you may require to do this test.

Reference no: EM13114327

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