A random sample of the number of farms (in thousands) in various states follows. Estimate the mean number of farms per states with 90% confidence. Assume s = 31. 47 95 54 33 64 4 8 57 9 80 8 90 3 49 4 44 79 80 48 16 7 6 78 68 15 21 52 40 50 109

please explain the steps