Question

A construction company orders 6200 new light bulbs for a new office building. If the probability of a light bulb being defective is 0.4%, predict how many of the light bulbs are likely to be defective. Round your answer to the nearest whole number.

Answer 1

$|\Omega|=6200\\ P(A)=0.4\%=0.004\\ |A|=?\\\\ |A|=|\Omega|\cdot P(A)=6200\cdot0.004=24.8\approx25$