16.A confidence interval estimate is desired for the gain in a circuit on a semiconductor device. Assume that gain is normally distributed with standard deviation σ = 20. (a) Find a 95% CI for µ when...

16.A confidence interval estimate is desired for the gain in a circuit on a semiconductor device. Assume that gain is normally distributed with standard deviation σ = 20. (a) Find a 95% CI for µ when n= 10 and x̄ = 1000. Show critical z values calculation.