Question

Suppose that 20% of all personal computers of a certain brand break down in the first year of operations. In an office with 10 such computers, find the probability that: a) none break down; b) exactly five break down; c) at least one breaks down; d) at most two breaks down; e) all break down.

Answer 1

Answer:

d

Step-by-step explanation:

The probability of computers are 20%. Therefore to determine the amount that would break out of 10 we simply just multiply by 0.2.

$=10\cdot{0.2}=2$

Therefore at most two breaks down. The answer is d