Chapter 10.2, Problem 4LC

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8th Edition

Frederick J Gravetter + 1 other

ISBN: 9781133956570

Textbook Problem

One sample from an independent-measures study has *n* = 9 with a variance of *s ^{2} =* 35. The other sample has

a. Compute the pooled variance. (*Note:* Equation 10.3 works well with these data.)

b. Compute the estimated standard error for the mean difference.

**a.**

To determine

**To find:** The pooled variance for the given question.

Explanation

**Given info:**

Two samples with size 9 and 3 have sample variances 35 and 40 respectively.

**Calculations:**

*Pooled variance:*

**b.**

To determine

**To compute:** The estimated standard error for the mean.

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