Given:Mean = 16.0 ozStandard deviation = 0.8 ozTo get the number of bags that should be selected so that the standard deviation of the sample mean is 0.1 ounces, here is the solution:.8 / square root (n) = .1 .1 * square root (n) = .8 square root (n) = 8 = 8^2 or 8 * 8The answer would be 64 bags.