Mona made fancy indigo costume decorations for each of the dancers in her year-end dance performance. She used 2/5 of a meter of ribbon for each decoration, which she got by cutting 4/5 of a meter of ribbon into equal pieces. How many decorations did Mona make?

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?