For this year's fundraiser, students at a certain school who sell at least 75 magazine subscriptions win a prize. if the fourth-grade students at this school sell an average (arithmetic mean) of 47 subscriptions per student, the sales are normally distributed, and have a standard deviation of 14, then approximately what percent of the fourth-grade students receive a prize? a) 1.5 b) 2.5 c) 2 d) 0 e) answer can't be found