Pick the Test (Z-test, Single Sample T-test, Independent Sample T-test, Paired Sample Ttest, ANOVA): 8. It’s believed that the average amount of sleep a person in the United States gets per night is...

Pick the Test (Z-test, Single Sample T-test, Independent Sample T-test, Paired Sample Ttest, ANOVA):

8. It’s believed that the average amount of sleep a person in the United States gets per night is 6.3 hours. A mom believes that mothers get far less sleep than that. She contacts a random sample of 20 other moms on a mom social networking site and finds that they get an average of 5.2 hours of sleep per night, with a standard deviation of 1.8 hours.

Test: ___________