Question

Using the frequency table below what is the probability of selecting a boy and a person who bought 10 up to 20 lunches

Gender
Bought
Lunch Boys Girls Total
0 up to 10 10 5 15
10 up to 20 20 25 45
Total 30 30 60

Answer 1

1/3

Explanation:

`\left[\begin{array}{cccc}Bought\ Lunch&Boys&Girls&Total\\0\ up\ to\ 10&10&5&15\\10\ up\ to\ 20&20&25&45\\Total&30&30&60\end{array}\right]`

The number of boys who bought 10 to 20 lunches is 20.

The total number of students is 60.

So the probability is 20/60 = 1/3.