The mean annual incomes of certified welders are normally distributed with the mean of $50,000 and a population standard deviation of $2,000. The ship building association wishes to find out whether their welders earn more or less than $50,000 annually. A sample of 100 welders is taken and the mean annual income of the sample is $50,350. If the level of significance is 0.05, what conclusion should be drawn? Select one: a.Reject the null hypothesis as the test statistic is greater than the critical value oft. b.Reject the null hypothesis as the test statistic is greater than the critical value ofChi squared. c.Do not reject the null hypothesis as the test statistic is less than the critical value ofz. d.Do not reject the null hypothesis as the test statistic is less than the critical value oft. e.Reject the null hypothesis as the test statistic is greater than the critical value ofz.

The mean annual incomes of certified welders are normally distributed with the mean of $50,000 and a population standard deviation of $2,000. The ship building association wishes to find out whether their welders earn more or less than $50,000 annually. A sample of 100 welders is taken and the mean annual income of the sample is $50,350. If the level of significance is 0.05, what conclusion should be drawn? Select one: a.Reject the null hypothesis as the test statistic is greater than the critical value oft. b.Reject the null hypothesis as the test statistic is greater than the critical value ofChi squared. c.Do not reject the null hypothesis as the test statistic is less than the critical value ofz. d.Do not reject the null hypothesis as the test statistic is less than the critical value oft. e.Reject the null hypothesis as the test statistic is greater than the critical value ofz.

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Description: The mean annual incomes of certified welders are normally distributed with the mean of $50,000 and a population standard deviation of $2,000. The ship buildingassociation wishes to find out whether their welders earn more or less than $50,000 annual

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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