A set of final examination grades in an introductory statistics course is normally? distributed, with a mean of 71 and a standard deviation of 8. Complete parts? (a) through? (d). .a. What is the probability that a student scored below 82 on this? exam? The probability that a student scored below 82 is 0.9162   0.9162. ?(Round to four decimal places as? needed.)   b. What is the probability that a student scored between 63 and 94?? The probability that a student scored between 63 and 94 is nothing   . ?(Round to four decimal places as? needed.)