Question

A manufacturer makes lightbulbs and claims that their reliability is 98 percent. Reliability is defined to be the proportion of nondefective items that are produced over the long term. If the company's claim is correct, what is the expected number of nondefective lightbulbs in a random sample of 1,000 bulbs?

Answer 1

The expected number of nondefective lightbulbs is 980 out of a random sample of 1,000 bulbs.

Step-by-step explanation:

Hi, if the company is right, this is the operation that we need to do.

`Bulbs(operating)=1,000*0.98=980`

So, we are expecting 980 working bulbs out of a sample of 1,000

Best of luck