Assume that both populations are normally distributed. a) Test whether u, >H2 at the a = 0.10 level of significance for the given sample data. b) Construct a 90% confidence interval about u, - 42. Click the icon to view the Student t-distribution table. a) Perform a hypothesis test. Determine the null and alternative hypotheses. O A. Ho: H1 = H2, H: H1 H2 O C. Ho: H1 > H2, H:H1 H2 Determine the test statistic. t 3 (Round to two decimal places as needed.)

Assume that both populations are normally distributed. a) Test whether u, >H2 at the a = 0.10 level of significance for the given sample data. b) Construct a 90% confidence interval about u, - 42. Click the icon to view the Student t-distribution table. a) Perform a hypothesis test. Determine the null and alternative hypotheses. O A. Ho: H1 = H2, H: H1 H2 O C. Ho: H1 > H2, H:H1 H2 Determine the test statistic. t 3 (Round to two decimal places as needed.)

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Description: Assume that both populations are normally distributed.a) Test whether u, > H2 at the a = 0.10 level of significance for the given sample data.b) Construct a 90% confidence interval about u, - H2.Click the icon to view the Student t-distribution tabl

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A statistics instructor randomly selected four bagn of oranges, each bag labeled 10 pounds, and weighed the bags. They weighed 9.5, 9.7,9.5, and 9.5 pounds. O Assume that the distribution of weights is Normal. Find a 95% confidence interval for the mean weight of all bags of oranges. Use technology for your calculations Answer parts a and b below. a. Choose the correct interpretation of the confidence interval below and, if necessary, fil in the answer boxes to complete your choice. OA. We are 95% confident the population mean is betweenand OB. We are 95% confident that the sample mean is between and OC. There is a 95% chance that all ntervals will be between and OD. The requirements for constructing a confidence interval are not satisfied. (Type integers or decimals rounded to the nearest thousandth as needed. Use ascending order.) nti ou Res "ptil atie
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Construct the indicated confidence interval for the difference between the two population means. Assume that the assumptions and conditions for inference have been met. A researcher was interested in comparing the heights of women in two different countries. Independent random samples of 9 women from country A and 9 women from country B yielded the following heights (in inches). Country A Country B 64.1 65,3 66.4 60.2 61.7 61,7 62.0 65.8 67.3 61.0 64.9 64.6 64.7 60.0 68.0 65.4 63.6 59.0 Determine a 90% confidence interval for the difference, HA - He. between the mean height of women in Country A and the mean height of women in Country B. O A. (0.15, 4.23) O B. (0.17, 4.21) OC. (0.14, 4.24) O D. (0.16, 4.22) O E. (-4.22, -0.16)
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Assume that both populations are normally distributed. a) Test whether u >H2 at the a = 0.01 level of significance for the given sample data. b) Construct a 99% confidence interval about u - 42- Sample 1 28 52.6 Sample 2 23 44.1 9.4 O A. Ho: H1 H2 O B. Ho: H1 = H2, H:Hq H2, HHy H2 Determine the test statistic. t= (Round to two decimal places as needed.) Approximate the P-value. Choose the correct answer below. O A. P-value 20.10 O B. P-value <0.01 O C. 0.05 s P-value <0.10 O D. 0.01 SP-value <0.05 Should the hypothesis be rejected at the a = 0.01 level of significance? V the null hypothesis because the P-value is V the level of significance. b) The confidence interval is the range from to (Round to twwo decimal places as needed. Use ascending order
Sample 1 Assume that both populations are normally distributed. a) Test whether µ, # µ, at the = 0.05 level of significance for the given sample data. b) Construct a 95% confidence interval about u, - H2- Sample 2 17 17 13 14.3 X 3.5 3.1 E Click the icon to view the Student t-distribution table. a) Perform a hypothesis test. Determine the null and alternative hypotheses. CA. Ho: H1 = H2, Hq:Hy # H2 O B. Ho: H1 = H2, H,: H1 Hz Determine the test statistic. t= - 1.15 (Round to two decimal places as needed.) Determine the critical value(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to three decimal places as needed.) O A. The critical value is O B. The lower critical value is The upper critical value is
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Assume that both populations are normally distributed. a) Test whether u > H2 at the a = 0.01 level of significance for the given sample data. b) Construct a 99% confidence interval about u - 42. 177 Sample 1 24 51.7 9.5 Sample 2 43.1 99 O A. Ho: H1 = H2, H:Hq>H2 O B. Ho: H1 = H2, HH1H2, H1: H1 H2 Determine the test statistic. %3D (Round to two decimal places as needed.) Approximate the P-value. Choose the correct answer below. O A. P-value 20.10 O B. P-value <0.01 O C. 0.01 s P-value <0.05 O D. 0.05 s P-value <0.10 Should the hypothesis be rejected at the a = 0.01 level of significance? V the null hypothesis because the P-value is the level of significance. b) The confidence interval is the range from to (Round to two decimal places as needed. Use ascending order.)
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