Generate 50 random samples of size n=35 from a normal population with mean ( μ = 30 ) standard deviation ( σ = 3 ) ... Based on the confidence interval used i this example ( 90% ), what percent of the intervals did you expect to fail to contain μ.

I'm doing this on minitab. I've already generated my random data, and found out what the actual percentage was, but I don't know how I'm supposed to estimate..

Help?

Thanks!