pellesis is L200 Question 8 (1 point) A nationwide survey of college students was conducted and found that students spend two hours per class hour studying. A professor at your school wants to determine whether the time students spend at your school is significantly different from the two hours. A random sample of fifteen statistics students is carried out and the findings indicate an average of 1.75 hours with a standard deviation of 0.24 hours. Test at the 5% level of significance. The t-test should not be used. Rather, use the z-test. The critical value of t is +2.145. The calculated value of ti5-4,03 The critical value of ls -4.03. The calculated value of lis 2.145 The critical value of t 151.761. The calculated value of t14.03 The critical value oft is 1781. The calculated value of tis - 1041