Question

* 11. A pharmaceutical company is testing the effectiveness of a new drug for lowering cholesterol. As part of this trial, they wish to determine whether there is a difference between the effectiveness for women and for men. The data set summarized in the Minitab output below. If we assume that the population variances are equal, what is the 1% critical value? Descriptive Statistics: M, F Variable M N 8 7 N* 0 0 Mean SE Mean St Dev Minimum 01 Median 03 Maximum 34.75 3.80 10.75 23.00 25.2533.00 41.00 56.00 37.57 11.65 30.82 10.00 23.00 32.00 50.00 75.00 (A) 3.012 (B) 1.771 (C) 2.650 (D) 3.707 (E) 3.143

Answer 1

11)

Solution :

Given that ,

n1 = 8

n2 = 7

Degrees of freedom = 8 + 7 - 2 = 13

$\alpha$ = 1% = 0.01

$\alpha$ / 2 = 0.005

Critical value = t _0.005,13 = 3.012

Option (A)