Zachary Chasse asked 8/5/2016 Scores on a test are normally distributed with a mean of 86 and a standard deviation of 14. What is the probability that a randomly selected student scored below 72?

Zachary Chasse asked 8/5/2016 1The average length of a certain species of a grasshopper is normally distributed with a mean of 2.6 inches and a standard deviation of .15 inch. What is the probability that a randomly chosen grasshopper will have a length of at least 2.9 inches?