Suppose 1095 and n 20 The critical value t2 can be obtained

Suppose (1-)=0.95 and n = 20. The critical value t_/2, can be obtained in Excel using

Select one:

a. –T.INV(0.025, 19)

b. –T.INV(0.05, 19)

c. –T.INV(0.1, 19)

Solution

Here, as

1 - alpha = 0.95

Then

alpha = 0.05

alpha/2 = 0.025

Also, df = n - 1 = 19.

Thus, we use

OPTION A: -T.INV(0.025, 19) [ANSWER]