A hypothesis test is to be used to help determine if there is a difference between the proportions

1. A hypothesis test is to be used to help determine if there is a difference between the proportions of 2-year college students and private university students that work at least 20 hours per week. Give the test value if a recent survey reported that in a sample of 300 students who attend two-year colleges, 105 work at least 20 hours a week and a sample of 225 students attending private universities, only 20 students work at least 20 hours per week.

2. Which of the following could not be the value of a linear correlation coefficient?

0.683 

0.197 

1.000 

1.369