Find the critical value zc that corresponds to a 94 confiden

Find the critical value zc that corresponds to a 94% confidence level.

A. ±2.33

B. ±1.645

C. ±1.88

D. ±1.96

At c = 0.94,

alpha/2 = (1-c)/2 = (1-0.94)/2 = 0.03

Thus, using table or technology, the z score with left/right tailed area of 0.03 are,

z(alpha/2) = +/- 1.880793608 = +/- 1.88 [ANSWER, C]