Question 4 A condence interval estimate is desired for the gain in a circuit on a semiconductor device. Assume that gain is normally distributed with standard derivation s = 20. (a) Find a 95% CI for m when n =10 and 9? = 1000. (b) Find a 95% CI for m when n :25 and 3? : 1000. (c) Find a 99% CI for m when n :10 and a? : 1000. ((1) Find a 99% CI for m when n =25 and f = 1000. (e) How does the length of the CIs computed change with the changes in sample size and condence level