A Nationwide Survey of College Students Was Conducted and Found

Multiple Choice

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.

A) The critical value of t is -4.03. The calculated value of t is ±2.145.
B) The critical value of t is ±2.145. The calculated value of t is -4.03.
C) The critical value of t is 1.761. The calculated value of t is -4.03.
D) The critical value of t is ±1.761. The calculated value of t is -1.041.
E) The t-test should not be used. Rather, use the z-test.