In order to test the difference in populations means,samples were collected for two independent populations where the variances are assumed equal and the population normally distributed.The following data resulted:
The value of the pooled standard deviation is 15.66.

Question

In order to test the difference in populations means,samples were collected for two independent populations where the variances are assumed equal and the population normally distributed.The following data resulted:
  The value of the pooled standard deviation is 15.66.

Quizplus · Accepted Answer

The statement mentions that the variances are assumed equal and the populations are normally distributed. In such a scenario, the pooled standard deviation can be calculated as the square root of the weighted average of the sample variances. Hence, the given value of the pooled standard deviation (15.66) could be valid, making Option A the correct answer.

In Order to Test the Difference in Populations Means,samples Were