Suppose you have a sample of 25 observations in which the average age of residents is 37 years and the standard deviation is 6.047 years. A friend tells you that the average resident is 35 years old.Formally state the hypothesis test you would use to test whether your friend is wrong. Use a two-tailed test.Using the confidence interval method, test your hypothesis at the 99% confidence level. Explicitly state the results of the test.Using the t-test method, determine at which conventional significance levels you can reject the null hypothesis and refute your friend’s claim (if any).

Given that, Sample mean= 37 sample size, n= 25 standard deviation, s= 6.047

Answered: Suppose you have a sample of 25…

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose you have a sample of 25 observations in which the average age of residents is 37 years and the standard deviation is 6.047 years. A friend tells you that the average resident is 35 years old.
1. Formally state the hypothesis test you would use to test whether your friend is wrong. Use a two-tailed test.
2. Using the confidence interval method, test your hypothesis at the 99% confidence level. Explicitly state the results of the test.
3. Using the t-test method, determine at which conventional significance levels you can reject the null hypothesis and refute your friend’s claim (if any).

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