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2. Let X be the weights of newborn babies in pounds, and denote m to be its median. For a sample of 14, we have: 5.2 11.8 7.1 14.4 6.3 7.5 11.1 5.5 9.8 12.7 10.5 10.9 8.7 9.2 (a) Give point estimates of 0.25, 0.35, m, π0.75. (b) Find the following confidence intervals and, from Table II in Appendix B, state the associated confidence coefficient: i. (X(1), X(5)), a confidence interval for 0.25. ii. (X(3), X(8)), a confidence interval for π0.35. iii. (X(5), X(10)), a confidence interval for "0.5.

2. Let X be the weights of newborn babies in pounds, and denote m to be its median. For a sample of 14, we have: 5.2 11.8 7.1 14.4 6.3 7.5 11.1 5.5 9.8 12.7 10.5 10.9 8.7 9.2 (a) Give point estimates of 0.25, 0.35, m, π0.75. (b) Find the following confidence intervals and, from Table II in Appendix B, state the associated confidence coefficient: i. (X(1), X(5)), a confidence interval for 0.25. ii. (X(3), X(8)), a confidence interval for π0.35. iii. (X(5), X(10)), a confidence interval for "0.5.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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2. Let X be the weights of newborn babies in pounds, and denote m to be its median. For a sample of 14, we have: 5.2 11.8 7.1 14.4 6.3 7.5 11.1 5.5 9.8 12.7 10.5 10.9 8.7 9.2 (a) Give point estimates of 0.25, 0.35, m, π0.75. (b) Find the following confidence intervals and, from Table II in Appendix B, state the associated confidence coefficient: i. (X(1), X(5)), a confidence interval for 0.25. ii. (X(3), X(8)), a confidence interval for 0.35. iii. (X(5), X(10)), a confidence interval for 70.5. (c) Now, we would like to test H₁ : m = 8 against H₁ m < 8 at significance level a = 0.05. i. Use the sign test to test the hypothesis. ii. Use the Wilcoxon sign-rank test to test the hypothesis. iii. Use the t-test to test the hypothesis, assuming the underlying distribution is symmetric.
Transcribed Image Text:2. Let X be the weights of newborn babies in pounds, and denote m to be its median. For a sample of 14, we have: 5.2 11.8 7.1 14.4 6.3 7.5 11.1 5.5 9.8 12.7 10.5 10.9 8.7 9.2 (a) Give point estimates of 0.25, 0.35, m, π0.75. (b) Find the following confidence intervals and, from Table II in Appendix B, state the associated confidence coefficient: i. (X(1), X(5)), a confidence interval for 0.25. ii. (X(3), X(8)), a confidence interval for 0.35. iii. (X(5), X(10)), a confidence interval for 70.5. (c) Now, we would like to test H₁ : m = 8 against H₁ m < 8 at significance level a = 0.05. i. Use the sign test to test the hypothesis. ii. Use the Wilcoxon sign-rank test to test the hypothesis. iii. Use the t-test to test the hypothesis, assuming the underlying distribution is symmetric.
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