The WISC Scores of a Sample of N = 20 $\alpha$

Multiple Choice

The WISC scores of a sample of n = 20 5^th graders resulted in a mean of 104 with a standard deviation of 9. Is the mean score significantly higher than 100 when $\alpha$ = 0.05?

A) No, because t = 1.99 which is greater than the critical value t* = 1.73.
B) Yes, because t = 1.99 which is greater than the critical value t* = 1.73.
C) No, because t = 1.99 which is smaller than the critical value t* = 2.09.
D) Yes, because t = 1.99 which is smaller than the critical value t* = 2.09.