A Computer Store Has 50 Printers of Which 40 Are

question 19

Multiple Choice

A computer store has 50 printers of which 40 are laser printers and 10 are ink jet printers. If a group of 10 printers is chosen at random from the store, find the mean and variance of the number of ink jet
Printers.

• A) Mean = 2, Variance = 0.2
• B) Mean = 2, Variance = 3
• C) Mean = 1, Variance = 0.2
• D) Mean = 2, Variance = 1.6