A pet supplier has a stock of parakeets of which 20% are blue parakeets. A pet store orders 3 parakeets from this supplier. If the supplier selects the parakeets at random,
What is the chance that the pet store gets exactly one blue parakeet?
A) 0.128
B) 0.024
C) 0.384
D) 0.096

Question

Quizplus · Accepted Answer

The probability of selecting exactly one blue parakeet out of three can be calculated using the binomial probability formula, which in this case is 3 * (0.20) * (0.80)^2 = 0.384. This accounts for the three different ways one blue parakeet and two non-blue parakeets can be selected.

A Pet Supplier Has a Stock of Parakeets of Which