- Words Were Displayed On A Computer Screen With Background Colors Of Red And Blue Results From Scores On A Test Of Word 1 (332.72 KiB) Viewed 121 times
- Words Were Displayed On A Computer Screen With Background Colors Of Red And Blue Results From Scores On A Test Of Word 2 (263.94 KiB) Viewed 121 times
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? Red Background Blue Background n 34 37 X 15.75 12.14 S 5.94 5.44 What are the null and alternative hypotheses? O A Ho; o Foz Hy:o? <o? OC. He: 0 + oz Hp: 0; = o O B. Ho: 0; = 0 LH: 040% O D. Ho: o = oz H₂:0² 2003 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 Ho. There is insufficient evidence to warrant rejection of the claim that the samples are from populations with the same standard deviation Submit quiz OB. Reject Ho. There is sufficient evidence to warrant rejection of the claim that the samples are from populations with the same standard deviation.
What is the conclusion for this hypothesis test? O A. Fail to reject Ho. There is insufficient evidence to warrant rejection of the claim that the samples are from populations with the same standard deviation O B. Reject Ho. There is sufficient evidence to warrant rejection of the claim that the samples are from populations with the same standard deviation. OC Reject Ho. There is insufficient evidence to warrant rejection of the claim that the samples are from populations with the same standard deviation. OD. Fail to 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? OA. Yes, the variation of word recall scores appears to be the same when the color is changed. O B. No, the variation of word recall scores appears to be the same when the color is changed OC. Yes, the variation of word recall scores appears to be different when the color is changed. OD. No, the variation of word recall scores appears to be different when the color is changed.