A lighthouse L is 40 km due north of a harbor H, a speedboat leaves H and travels on a bearing of 053 from H until it reaches a point P. Point P lies on a bearing of 075 degrees from L.

calculate the distance traveled by the speedboat

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?