Johnny uses 1/2
cup of sugar and
1/2
cup
of flour to make each batch of dough.
How many batches of dough can he
make with the amount of ingredients he
has left? Explain how you found your
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?