Statistics for math test scores of two Grade 3 classes were computed. Class 1 n: 21...
Statistics for math test scores of two Grade 3 classes were computed.
Class 1 n: 21 mean: 72 variance: 4.5
Class 2 n: 25 mean: 65 variance: 7.3
The principal wants to conduct a t-test (=0.05) to compare performance of these two classes. Which of the following is true?
A. This is a one-tailed test with equal variances
B. This is a two-tailed test with unequal variances
C. This is a one-tailed test with unequal variances
D. This is a two-tailed test with equal variances
Homework Answers
The variances are not far apart to be significantly different. Hence,
This is a two-tailed test with equal variances.
Option D is correct.
Add Answer to:
Statistics for math test scores of two Grade 3 classes were
computed.
Class 1 n: 21...
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