The common fruit flyDrosophila melanogasteris the most studied organism in genetic research because it is small, easy to grow, and reproduces rapidly. The length of the thorax (where the wings and legs attach) in a population of male fruit fies is approximately Normal with mean 0.800 millimeters (mm) and standard deviation 0.078 mm. Note: Use Table A to find the proportion below.

(a) What proportion of flies have thorax length 0.79 mm or longer?

(b) What proportion have thorax length between 0.79 mm and 0.95 mm?