the weights of egge produced on a farm are normally distribu

the weights of egge produced on a farm are normally distributed with a mean of 1.4 ounces and a standard deviation of 0.4 ounces1.what percent of the eggs weight at least 1 ounce?2.how many of 1200 eggs are withiin 2 standard deviations of the mean?3.to be a graded extra large,an egg must weight at least 2.2 ounces.what is the probability that an egg from this form will be graded extra large?