(Choose 1 answer)
(See picture)
A. 16
B. 11
C. 62
D. 44
A confidence interval estimate is desired for the gain in a semiconductor device. Assume that gain is normally dist standard deviation σ = 100. How large must the sample s half-length of the 95% CI is to be 50?
Let 20.025 1.960; 20.05 1.645.
23
