Example 1 in this section included results from a study of the effects of color on creativity,
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Example 1 in this section included results from a study of the effects of color on creativity, and the results below were used to study the effects of color on cognition. 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 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 the variation of word recall scores?
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Assume that both samples are independent simple random samples from populations having normal distributions.
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H 0 1 2 H 1 1 2 Test statistic f 590 2 548 2 11592 Upper critical F value is between 18752 and 2...View the full answer
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