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Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570

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BuyFindarrow_forward

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570
Textbook Problem

One sample from an independent-measures study has n = 4 with SS = 100. The other sample has n = 8 and SS = 140.

a. Compute the pooled variance. (Note: Equation 10.2 works well with these data.)

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

a.

To determine

To compute: The pooled variance for the given question.

Explanation

Given info:

The samples of size 4 and 8 have sum of squared errors (SS) of 100 and 140.

Calculation:

Pooled variance sp2:

sp2=SS1+SS2df1+df2

Degree of Freedom:

df1=n11=41=3

df2=n21

b.

To determine

To find: The estimated standard error for the given question.

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