The distribution of actual weights of 8-oz chocolate barsproduced by a certain machine is normal with mean 7.7 ounces andstandard deviation 0.15 ounces.
(a) What is the probability that the average weight of a bar ina Simple Random Sample (SRS) with four of these chocolate bars isbetween 7.59 and 7.86 ounces?
(b) For a SRS of four of these chocolate bars,
c) what is the level L such that there is a 3% chance that theaverage weight is less than L?
