Solution: Hypothesis Tests of Claims About Variation. In Exercises 716, test the given

Chapter 9, Problem 7

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Hypothesis Tests of Claims About Variation. In Exercises 716, test the given claim. Assume that both samples are independent simple random samples from populations having normal distributionsColor and Cognition Example 1 in this section included results from a study of the effects of color on creativity, and the results below wereused to study the effects of color on cognition. Words were displayed on a computer screen with background colors of red and blue. Results fromscores on a test of word recall are given below. Use a 0.05 significance level to test the claim that the samples are from populations with the same standard deviation. Does the background color appear to have an effect on thevariation of word recall scores?Red Background: n = 35 , x = 15.89 , s = 5.90 Blue Background: n = 36 , x = 12.31 , s = 5.48