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?

1 Answer
Sep 5, 2017

# 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.