According to the IRS the mean tax refund for the year 2009 was $3333. The standard deviation of the population of returns is $551, and the amounts follow the normal distribution.
A. What percent of the returns are more than $2000
B. What percent of the returns are more than $5000
C. What percent of the returns are between $3000 and $5000?
D. Create an approximate line graph of this normal distribution with $3333 as the mean. You can make a table of values from which to create the graph.