Question

A box holds 240 eggs. The probability that an egg is brown is 0.05. How do you find the expected number of brown eggs in the box?

Answer 1

`12` brown eggs.

Explanation:

Change `0.05` into a fraction to get a better understanding of the value.

`0.05 = 5/100 = 1/20`

In terms of probability this means that for every `20` eggs there is likely to be `1` brown egg

`240 div 20 = 12`

There are `12` groups of `20` eggs in the box, and for each there will be `1` brown egg.

Therefore we can expect `12` brown eggs.

Or `1/20 xx 240 = 12` brown eggs.