1.) Find the area under the standard normal curves z=1.25
2.) An airline knows from experience that the distribution of the number of suitcases that get lost each week on a certain route is approximately normal with u =15.5 and the standard deviation is 3.6 what is the probability that during a given week the airline will lose between 10 and 20 suitcases.
3.) Assume the heights of woman are normally distributed with a mean of 63.6 inches and a standard deviation of 2.5 inches. The US army requires that the heights of women between 58 and 80 inches. If a woman is randomly selected, what is the probablity that her height is between 58 and 80 inches.