Where can the perpendicular bisectors of the sides of a right triangle intersect? i. inside the triangle ii. on the triangle iii. outside the triangle question 4 options: i, ii, or ii ii only i only i or ii only

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?