19) Listed below are the amounts of strontium-90 (in millibecquerels or miq per gram of calcium) in a simple random samp

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19 Listed Below Are The Amounts Of Strontium 90 In Millibecquerels Or Miq Per Gram Of Calcium In A Simple Random Samp 1 (33.79 KiB) Viewed 59 times

19) Listed below are the amounts of strontium-90 (in millibecquerels or miq per gram of calcium) in a simple random sample of baby teeth obtained from Pennsylvania residents and New York residents born after 1979. Use a 0.05 significance level to test the claim that the two groups of teeth come from populations with the same standard deviation. Compute the sample standard deviation of each group. Hint: STAT-TESTS-2-SampTest Pennsylvania: 154, 142, 149, 130, 151, 162, 151, 142, 156, 136, and 138. New York: 133, 138, 142, 131, 134, 129, 128, 140, 140, 142, 137 25) See problem 19. State the technical conclusion based on the traditional method. a) The test statistic is greater than the critical value, FTR Ho b) The test statistic is less than the critical value: FTR Ho c) The test statistic is greater than the critical value; Reject Ho d) The test statistic is less than the critical value; Reject Ho 26) See problem 19. State the technical conclusion based on the value method. a) The value is less than alpha; Reject Ho b) The value is less than alpha; FTR Ho c) The value is greater than alpha; Reject Ho. d) The value is greater than alpha; FTR Ho. 27) See problem 19. State the non-technical conclusion. a) There is not sufficient sample evidence to support the claim that the two groups of teeth come from populations with the same standard deviation. b) The sample data support the claim that the two groups of teeth come from populations with the same standard deviation. c) There is not sufficient evidence to warrant rejection of the claim that the two groups of teeth come from populations with the same standard deviation. d) There is sufficient evidence to warrant rejection of the claim that the two groups of teeth come from populations with the same standard deviation 28) See problems 19-27. Choose the best comment. a) We showed that the two groups have approximately the same mean strontium-90 in the teeth. b) We showed the two groups to have standard deviations that are equal.