Question

A certain type of light bulb has a failure rate of 2.4%. What is the expected number of failures if 800 light bulbs are tested?

Answer 1

You would multiply 800 times .024 which represents 2.4% Your answer would then be what?

Answer 2

percentage means "out of 100". So for example, 3.5% of 400 boxes would mean:\[\frac{3.5}{100}\times400\]Use the same principal for your question to arrive at the answer.

Answer 3

Okay, thank you!!