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 $1233 a week in 2014. A recent sample of 388 American workers who have a bachelor's degree showed that they earn an average of $1240 per week. Suppose that the population standard deviation of such earnings is $137. 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 $1233. Will you reject the null hypothesis at a = 0.005? Round your answer to four decimal places. p-value = i 0.8264 Do not reject Ho. b. Test the hypothesis of part a using the critical-value approach and a = 0.005. Z= Round your answer for the observed value of z to three decimal places. i 0.94

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Your answer is partially correct.
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 $1233 a week in 2014. A recent sample of 388 American workers who have a bachelor's degree showed that they earn an
average of $1240 per week. Suppose that the population standard deviation of such earnings is $137.
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 $1233. Will you reject the null hypothesis at a = 0.005?
Round your answer to four decimal places.
p-value = i 0.8264
Do not reject
Z =
b. Test the hypothesis of part a using the critical-value approach and a = 0.005.
Ho.
Round your answer for the observed value of z to three decimal places.
i 0.94
Transcribed Image Text:Your answer is partially correct. 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 $1233 a week in 2014. A recent sample of 388 American workers who have a bachelor's degree showed that they earn an average of $1240 per week. Suppose that the population standard deviation of such earnings is $137. 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 $1233. Will you reject the null hypothesis at a = 0.005? Round your answer to four decimal places. p-value = i 0.8264 Do not reject Z = b. Test the hypothesis of part a using the critical-value approach and a = 0.005. Ho. Round your answer for the observed value of z to three decimal places. i 0.94
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