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

When the variances are assumed equal and the population normally distributed, the pooled standard deviation can be calculated by combining the sample standard deviations and sample sizes of both populations. So, it is possible to obtain a value for the pooled standard deviation, making statement A true.

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