A large mail house which mails such items as catalogues, ...

[Frost2351]

A large mail house which mails such items as catalogues, magazines, and other bulk mailings guarantees that there will be no more than a 3 error rate on its mailing labels. A customer who contracted a mailing to 190,000 individuals experienced a return of 5,900 items, which had incorrect addresses. Which of the following statements is true?
 a. There is a 3 chance of an incorrect return.
  b. There is a 0.0054 probability that a return of 5900 or more incorrect addresses could occur if the true error rate is 3.
  c. There is a 0.4964 probability that a return of 5900 or more incorrect addresses could occur if the true error rate is 3.
  d. There is a 2.69 percent possibility that a return of 5900 incorrect addresses could occur if the true error rate is 3.
  e. None of these statements are correct.

Question 2

The average sales per customer at a home improvement store during the past year is 75 with a standard deviation of 12 . The probability that the average sales per customer from a sample of 36 customers, taken at random from this population, exceeds 78 is:
 a. 0.4332.
  b. 0.0668.
  c. 0.0987.
  d. 0.9013.
  e. 0.5000

[momo1250]

Answer to Question 1

B

Answer to Question 2

B

[Frost2351]

TYSM

[jordangronback]

Gracias!