probability a tax auditor is collecting a sample of 8 tax re

probability a tax auditor is collecting a sample of 8 tax returns for an audit. if 4 or more of these returns are improper the entire population of 55 tax returns will be audited. complete parts a through d below:

a. probability that entire population will be audited if the true number of improper returns is 15?

b. probability that entire population will be audited if the true number of improper returns is 20?

c. probability that entire population will be audited if the true number of improper returns is 5?

d. probability that entire population will be audited if the true number of improper returns is 10?

Solution

probability that entire population will be audited if the true number of improper returns is 15 is given as 15/55

probability that entire population will be audited if the true number of improper returns is 20is given as 20/55

probability that entire population will be audited if the true number of improper returns is 5 is given as 5/55

probability that entire population will be audited if the true number of improper returns is 10 is given as 10/55