2. In testing the difference between two population means using two independent samples, we use the pooled variance in estimating the standard error of the sampling distribution of the sample mean difference if the: a. sample sizes are both large. b. populations are at least normally distributed with equal variances. c. populations are non-normal with unequal variances. d. All of these are required conditions.
2. In testing the difference between two population means using two independent samples, we use the pooled variance in estimating the standard error of the sampling distribution of the sample mean difference if the: a. sample sizes are both large. b. populations are at least normally distributed with equal variances. c. populations are non-normal with unequal variances. d. All of these are required conditions.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Transcribed Image Text:2.
In testing the difference between two population means using two independent samples,
we use the pooled variance in estimating the standard error of the sampling distribution of the sample
mean difference
if the:
a. sample sizes are both large.
b. populations are at least normally distributed with equal variances.
c. populations are non-normal with unequal variances.
d. All of these are required conditions.
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