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According to the U.S. Bureau of Labor Statistics, all workers in America who had a bachelor's degree and were employed earned an average of $1232 a week in 2014. A recent sample of 376 American workers who have a bachelor's degree showed that they earn an average of $1255 per week. Suppose that the population standard deviation of such earnings is $132. a. Find the p-value for the test of hypothesis with the alternative hypothesis that the current mean weekly earning of American workers who have a bachelor's degree is higher than $1232. Will you reject the null hypothesis at a = 0.025? Round your answer to four decimal places. p-value = i v Họ. b. Test the hypothesis of part a using the critical-value approach and a = 0.025.

According to the U.S. Bureau of Labor Statistics, all workers in America who had a bachelor's degree and were employed earned an average of $1232 a week in 2014. A recent sample of 376 American workers who have a bachelor's degree showed that they earn an average of $1255 per week. Suppose that the population standard deviation of such earnings is $132. a. Find the p-value for the test of hypothesis with the alternative hypothesis that the current mean weekly earning of American workers who have a bachelor's degree is higher than $1232. Will you reject the null hypothesis at a = 0.025? Round your answer to four decimal places. p-value = i v Họ. b. Test the hypothesis of part a using the critical-value approach and a = 0.025.

MATLAB: An Introduction with Applications
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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According to the U.S. Bureau of Labor Statistics, all workers in America who had a bachelor's degree and were employed earned an average of $1232 a week in 2014. A recent sample of 376 American workers who have a bachelor's degree showed that they earn an average of $1255 per week. Suppose that the population standard deviation of such earnings is $132. a. Find the p-value for the test of hypothesis with the alternative hypothesis that the current mean weekly earning of American workers who have a bachelor's degree is higher than $1232. Will you reject the null hypothesis at a = 0.025? Round your answer to four decimal places. p-value = i Но- b. Test the hypothesis of part a using the critical-value approach and a = 0.025. Round your answer for the observed value of z to three decimal places. Z = i v Ho.
Transcribed Image Text:According to the U.S. Bureau of Labor Statistics, all workers in America who had a bachelor's degree and were employed earned an average of $1232 a week in 2014. A recent sample of 376 American workers who have a bachelor's degree showed that they earn an average of $1255 per week. Suppose that the population standard deviation of such earnings is $132. a. Find the p-value for the test of hypothesis with the alternative hypothesis that the current mean weekly earning of American workers who have a bachelor's degree is higher than $1232. Will you reject the null hypothesis at a = 0.025? Round your answer to four decimal places. p-value = i Но- b. Test the hypothesis of part a using the critical-value approach and a = 0.025. Round your answer for the observed value of z to three decimal places. Z = i v Ho.
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