Question 1182176
The point-estimate is the best guess, which is the mean from the data set of 151.06 lb.

99%CI half-interval is z(0.995)*sigma/sqrt(n)
=2.576*30.48/sqrt(35)=13.27 lb
the full interval is (137.79 lb, 164.33 lb.)
the 90% interval uses 1.645 for z and the half-interval is 8.475 lb. This is added to and subtracted from the mean to get the full interval.