MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question
Words were displayed on a computer screen with background colors of red and blue. Results from scores on a test of word recall are given below. Use a
normal distributions. Does the background color appear to have an effect on the variation of word recall scores?
0.05
significance level to test the claim that the samples are from populations with the same standard deviation. Assume that both samples are independent simple random samples from populations having
|
n
|
x
|
s
|
---|---|---|---|
Red Background
|
35
|
15.86
|
5.95
|
Blue Background
|
37
|
12.11
|
5.43
|
What are the null and alternative hypotheses?
what is the test statistic? (F =?)
what is the P-value?
does the background color appear to have an effect on the variation of word recall scores?
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