statistics

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 $1038 a week in 2010. A recent sample of 400 American workers who have a bachelor’s degree showed that they earn an average of $1060 per week. Suppose that the population standard deviation of such earnings is $160.

Question

statistics

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 $1038 a week in 2010. A recent sample of 400 American workers who have a bachelor’s degree showed that they earn an average of $1060 per week. Suppose that the population standard deviation of such earnings is $160.

shamil98 · Answer

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 $1038. Will
you reject the null hypothesis at  alpha =  .025?

shamil98 · Answer

I'm not sure what my H_o would be, H_1 would be that mu > 1038 i presume?

kropot72 · Answer

The null hypothesis would be that there is no change from mu = 1038.

shamil98 · Answer

thank you, so am i correct saying that the alternative hypothesis is mu > 1038?

kropot72 · Answer

If you need more help, I will be back online in about an hour.
"so am i correct saying that the alternative hypothesis is mu > 1038". I agree.

shamil98 · Answer

ah i got it from here thank you!

kropot72 · Answer

You're welcome :)