In a photographic process, the developing time of prints may be looked upon as a random variable hav-ing the normal distribution with μ = 15.40 seconds and σ = 0.48 second. Find the probabilities that the time ittakes to develop one of the prints will be(a) at least 16.00 seconds;(b) at most 14.20 seconds;(c) anywhere from 15.00 to 15.80 seconds.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.