Author Question: A retailer of electronic equipment received six VCRs from the manufacturer. Three of the VCRs were ... (Read 1369 times)

mckennatimberlake · **on:** Jun 24, 2018

A retailer of electronic equipment received six VCRs from the manufacturer. Three of the VCRs were damaged in the shipment. The retailer sold two VCRs to two customers.
a. Can a binomial formula be used for the solution of the above problem?
b. What kind of probability distribution does the above satisfy, and is there a function for solving such problems?
c. What is the probability that both customers received damaged VCRs?
d. What is the probability that one of the two customers received a defective VCR?

Question 2

In practice, the most frequently encountered hypothesis test about a population variance is a
a. one-tailed test, with rejection region in the lower tail.
b. one-tailed test, with rejection region in the upper tail.
c. two-tailed test, with equal-size rejection regions.
d. two-tailed test, with unequal-size rejection regions.

joneynes · **Reply #1 on:** Jun 24, 2018

Answer to Question 1

a. No, in a binomial experiment, trials are independent of each other.
b. Hypergeometric probability distribution
c. 0.2
d. 0.6

Answer to Question 2

b