Question

A firm's recent records indicate that 4 percent of the computer keyboards produced by an automatic, high-speed machine are defective. If 3 keyboards are randomly selected, what is the probability that none of the keyboards are defective

Answer 1

Answer: $0.8847$

Step-by-step explanation:

Given

There is 4% chance that the computer keyboards are faulty. So, chances that it is not faulty is 96%

If three keyboards are randomly selected

Probability that none of the keyboards are defective is given by P

$\Rightarrow P=0.96\times 0.96\times 0.96\\\Rightarrow P=(0.96)^3\\\Rightarrow P=0.8847$

The probability is $0.8847$

Answer 2

Answer:

0.8847

Step-by-step explanation: