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(Chapter 9) Question 9 of 10 This quiz: 10 point(s) possible This question: 1 point(s) possible Submit quiz Words were displayed on a computer screen

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(Chapter 9) Question 9 of 10 This quiz: 10 point(s) possible This question: 1 point(s) possible Submit quiz 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. Assume that both samples are independent simple random samples from populations having normal distributions. Does the background color appear to have an effect on the variation of word recall scores? n X Red Background 35 15.75 5.92 Blue Background 36 12 95 5.47 What are the null and alternative hypotheses? OB. Ho. 7 107 OD. H. 7 = 02 H1 07 207 Identify the test statistic. F=(Round to two decimal places as needed) Use technology to identify the P.value The P-value Is (Round to three decimal places as needed.) What is the conclusion for this hypothesis test? O A. Fail to reject He There is sufficient evidence to warrant rejection of the claim that the samples are from populations with the same standard deviation. O B. Reject Ho. There is insufficient evidence to warrant rejection of the claim that the samples are from populations with the same standard deviation. O C. Fail to reject He There is insufficient evidence to warrant rejection of the claim that the samples are from populations with the same standard deviation. O D. Reject Ho. There is sufficient evidence to warrant rejection of 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? O A. No, the variation of word recall scores appears to be the same when the color is changed. O B. Yes, the variation of word recall scores appears to be the same when the color is changed O C. Yes, the variation of word recall scores appears to be different when the color is changed. O D. No, the variation of word recall scores appears to be different when the color is changed. Next

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