>>11670739>>11670736fine, first question.
In a large batch of light bulbs, it is known that there is a 95% probability of a randomly chosen one
light bulb will work.
Ten light bulbs are picked out at random.
a) What is the probability that nine of the ten light bulbs work?
b) What is the probability that at least one of them works?
You try the light bulbs one by one.
c) What is the probability that any of them will work?
The light bulbs come in packs of 40 light bulbs in each package.
d) Find the probability that at least 10% of bulbs in a package do not work by approximating
for normal distribution.
