Acompany paid $9000 for the rights to software program. the payment was shared by ten friends. eight friends each received equal amounts, and two friends each received double that amount. what amount of money was each of the eight friends' share of the payment?

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?