Just answer please

' Question 9 0 I 12 pts Determine if the test is left-tailed, right-tailed , or twotailed. a) To test if the mean number of hours spent working per week by college students who hold jobs is greater than 20 hours. Two~tai|ed b} To test if the mean commute time for Cincinnati residents is less than 30 minutes [Select] c) To test whether the percentage of adult Americans who are obese is 40 [ Select ]