Aconditional relative frequency table is generated by column from a set of data the conditional relative frequencies of the two catorgical variables are then compsred. if the relative frequencies being compared are .21 and .79, which conclusion is most likely supported by the data?

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?