pleasew help The mean work week for new college graduates is believed to be about 53 hours. A univeristy career office believes that it has changed in recent years. They conduct a survey of recent...

pleasew help

The mean work week for new college graduates is believed to be about 53 hours. A univeristy career office believes that it has changed in recent years. They conduct a survey of recent graduates.

You wish to test the claim that the mean numbers of hours that college graduates work per week is not equal to 53 hours at a significance level of α=0.01α=0.01.

1) Setup competing hypotheses



Choose the correct null hypothesis:

Choose the correct alternative hypothesis:

2) Sample data (no answers for this part)



You obtain a sample of size 38 with a mean of 48.5 hours and a standard deviation of 13.1 hours.

3) What is the test statistic and the pp-value for this sample?

Don't forget to recalculate the standard deviation before calculating the answers.

4) Make a decision

The p-value is...

This p-value leads to the decision...