Question

The average income tax refund for the 2009 tax year was ?$2848.

Assume the refund per person follows the normal probability distribution with a standard deviation of ?$946.

Complete parts a through d below.

a. What is the probability that a randomly selected tax return refund will be more than ?$2300???(Round to four decimal places as? needed.)

b. What is the probability that a randomly selected tax return refund will be between ?$1300 and ?$2900???(Round to four decimal places as? needed.)

c. What is the probability that a randomly selected tax return refund will be between ?$3000 and ?$4400???(Round to four decimal places as? needed.)

d. What refund amount represents the 35th percentile of tax? returns? ?(Round to the nearest dollar as? needed.)

Answer 1