Enter your answer in the answer box and then click check answer. all parts showing clear all check answer x sorry, that's not correct. substitute n equals = 6 6, p equals = 0.35 0.35 and each possible value of x less than 4 into your technology to find each probability. then sum to find upper p left parenthesis upper x less than 4 right parenthesis

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?