Thread: bulb probability

Two percent of the bulbs produced by a factory are not usable .Find the smallest number of bulbs that must be examined so that the probabiltiy of obtaining at least one non-usable bulb exceeds 0.5 .

Originally Posted by thereddevils

Two percent of the bulbs produced by a factory are not usable .Find the smallest number of bulbs that must be examined so that the probabiltiy of obtaining at least one non-usable bulb exceeds 0.5 .

X ~ Binomial(n = ?, p = 0.02).

Solve for the smallest integer value of n.