Suzanne bought 50 apples at the apple orchard. she bought 4 times as many red apples as green apples. how many more red apples then green apples did suzanne buy

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

If f(x) = -5x + 1 and g(x) = x3, what is (gºf)(0)? enter the correct answer

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?