Question: Statistics published by the Internal Revenue Service indicate that only 72% of all

taxpayers file their returns on time. Assume that a random sample of 300 taxpayers is surveyed

A. (2) What probability distribution should be used to analyze this study? (Give its name.)

B. (2) How many taxpayers would be expected have filed their returns on time?

C. (2) Compute the variance and standard deviation of this distribution. (Identify with the correct symbols for full credit.)

Variance:

Standard Deviation:

D. (2) Calculate the range of usual values for the number of taxpayers among the 300 who would have filed their returns on time.

E. (2) What is the probability that exactly 210 of the 300 taxpayers will have filed their returns on time?

F. (2) What is the probability that more than 220 of the 300 taxpayers filed on time?

G. (2) What is the probability that less than 200 of the taxpayers filed on

time?