If a sample of size 120 is selected, the value of A for the probability P(-A t A) = 0.98 is:
A)	1.960.
B)	2.576.
C)	1.282.
D)	2.326.
Answer:D
If a sample of size 120 is selected, the value of A for the probability P(-A t A) = 0.98 is:
A)	1.960. B)	2.576. C)	1.282. D)	2.326.