The number of people who purchased a new car from force motor company , is 140% of the number of people who purchased a new car from ampere motors . if 90 people purchased a car from ampere motors how many people purchased a car from force motor company

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?