2 Jessica can climb 46 stairs in 1 minute. At this rate, how many stairs can she climb in 6.5
minutes?
F 299 H 506
G 2,990 J 5,060

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?