The average weight of a National Football League player varies according to a distribution that is approximately Normal with mean of 245 pounds and a standard deviation of 12 pounds. a. How many standard deviations above the mean is a weight of 263 pounds? Round to 4 places. b. What is the proportion of players with a weight below 215 pounds? Round to 4 places. c. What is the proportion of players with a weight between 215 and 263 pounds? Round to 4 places. d. How much must a player weigh to be in the highest 5% of the weights? lbs Round to the nearest pound. e. Choose 50 National Football League players at random. What is the probability that their average weight exceeds 249? 2 Round to 4 places