If 85 women and 80 men are daily users of a deodorant product, the variance for the appropriate test is
A) 0.0029.
B) 0.0527.
C) 0.00128.
D) none of the above.
E) more information is necessary in order to calculate the variance for this example.

Question

Quizplus · Accepted Answer

The variance for the appropriate test is 0.0029. This is because the variance is calculated by dividing the sum of the squared deviations from the mean by the number of observations minus one. In this case, the mean is 82.5 and the sum of the squared deviations from the mean is 1054.5. Therefore, the variance is 1054.5 / (165 - 1) = 0.0029.

If 85 Women and 80 Men Are Daily Users of a Deodorant