Question

A computer network manager wants to test the reliability of some new and expensive fiber-optic Ethernet cables that the computer department just received. The computer department received 4 boxes containing 30 cables each. The manager does not have the time to test every cable in each box. The manager will choose one box at random and test 6 cables chosen randomly within that box. What is the population of interest?

a. 120 cables
b. b. 60 cables
c. the one box that was chosen at random from the 4 boxes
d. the 4 boxes
e. the 6 cables chosen randomly for testing

Answer 1

a. 120 cables

Explanation:

• There are 4 boxes
• Each box contains 30 cables
• Total number of cables = 4*30 = 120

Purpose of the test = to confirm all cables are good

Population of interest in this case is all cables.

So the correct answer choice is

• a. 120 cables