In Country A, the population mean height for 10-year-old girls is 53.6 inches with a standard deviation of 2.1 inches. Suppose a random sample of 15 10-year-old girls from Country B is taken and that these girls had a sample mean height of 52.5 inches with a standard deviation of 2.6 inches. Assume that heights are Normally distributed. Complete parts (a) through (c) below. a. Determine whether the population mean for height for 10-year-old girls from Country B is significantly different from the Country A population mean. Use a significance level of 0.05. Determine the null and alternative hypotheses. Choose the correct answer below. B. Ho: H= 53.6 O A. Ho: u53.6 H:u= 53.6 OC. Ho: u= 53.6 Hiµ<53.6 H: u#53.6 O D. Ho: u> 53.6 Hiµ= 53.6 O E. Ho: u<53.6 Hiµ= 53.6 OF. Ho: u= 53.6 Hiµ > 53.6 Check the conditions to see whether the test statistic will follow a t-distribution. The sample is random and the observations independent. The distribution of the heights is Normally distributed. are Find the test statistic. (Round to two decimal places as needed.)

In Country A, the population mean height for 10-year-old girls is 53.6 inches with a standard deviation of 2.1 inches. Suppose a random sample of 15 10-year-old girls from Country B is taken and that these girls had a sample mean height of 52.5 inches with a standard deviation of 2.6 inches. Assume that heights are Normally distributed. Complete parts (a) through (c) below. a. Determine whether the population mean for height for 10-year-old girls from Country B is significantly different from the Country A population mean. Use a significance level of 0.05. Determine the null and alternative hypotheses. Choose the correct answer below. B. Ho: H= 53.6 O A. Ho: u53.6 H:u= 53.6 OC. Ho: u= 53.6 Hiµ<53.6 H: u#53.6 O D. Ho: u> 53.6 Hiµ= 53.6 O E. Ho: u<53.6 Hiµ= 53.6 OF. Ho: u= 53.6 Hiµ > 53.6 Check the conditions to see whether the test statistic will follow a t-distribution. The sample is random and the observations independent. The distribution of the heights is Normally distributed. are Find the test statistic. (Round to two decimal places as needed.)

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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