Question

in a certain factory that produces bulbs,the probability that a bulb is faulty is 0.05. If 2000 bulbs are produced by the factory, how many can you expect to be faulty?

Answer 1

Simply multiply the total amount of bulbs by the probability of being faulty:

2000 * 0.05 = 100

You can expect 100 bulbs to be faulty.

Answer 2

Hey!

The probability that a bulb is faulty is 0.05, and 2,00 bulbs are produced. You have to multiply the probability by how much was made.

`Probability = 0.05`

`Amount- Made = 2,000`

That gives you:

`0.05 * 2000 = 100`

`\framebox{You can expect 100 bulbs to be faulty}`