Height of 10th grade boys is normally distributed with a mean of 63.5 in. and a standard deviation of 2.9 in. The area greater than the z-score is the probability that a randomly selected 14-year old boy exceeds 70 in. What is the probability that a randomly selected 10th grade boy exceeds 70 in.?Use your standard normal table. Heights for 16-year-old boys are normally distributed with a mean of 68.3 in. and a standard deviation of 2.9 in. Find the z-score associated with the 96th percentile. Find the height of a 16-year-old boy in the 96th percentile. State your answer to the nearest inch.