Ticket prices were on sale from $8.75 to $6.00. what is the percent of decrease rounded to the nearest tenth? oa) 27.5% ob) 31.4% oc) 45.8% od) 33.7%

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?