Answer:
Step-by-step explanation:
If a child is chosen at random, we are picking from all the children, of which there are a total of 20 (it says that at the top). You could also just add up all the numbers in the boxes to see that there are 20 students. There are a total of 8 girls. So the answer to a. What is the probability that the chosen child is a girl is the ratio of girls to total children:
[tex]\frac{8}{20}[/tex]. But always reduce if you can, so the actual ratio of girls to total students is
[tex]\frac{8}{20}=\frac{4}{10}=\frac{2}{5}[/tex]. So
a. [tex]\frac{2}{5}[/tex]
Now we want to know, out of girls only, what is the chance we will pick a left-handed girl. Out of the 8 girls total, only 2 of them are left-handed (not too many of us around!). Stating that as a ratio (which is another way to say "fraction"), we have
[tex]\frac{2}{8}[/tex]. But again, reduce if you can, so
b. [tex]\frac{1}{4}[/tex]
