Question

In a class of 15 children, 6 of them speak primarily Chinese at home.

What is the probability that a randomly selected child speaks primarily Chinese at home?

Simplify your answer and write it as a fraction or whole number.

Answer 1

As mentioned, the probability is just a fraction.
<number of "good" outcomes> / <TOTAL number of outcomes>

IN this setup, the "good" outcome is that a child speaks primarily chinese at home... how many?

Answer 2

6.

Answer 3

That's right. And how many total outcomes?

Answer 4

15.

Answer 5

So... the probability is...?
\[\huge \frac{\color{red}{\text{number of "good"outcomes}}}{\color{blue}{\text{TOTAL number of outcomes}}}\]

Answer 6

15/6= 2.5.

Answer 7

You got it backwards, there :P
I asked you how many "good" outcomes, you said 6, not 15 :P

Answer 8

Ohh.

Answer 9

Okay, something about probability that you should know... it's never bigger than 1.
So if you're asked the probability and you get something that's bigger than 1, odds are, it's wrong :P

Answer 10

Well., I Still Don't Understand. So., I Don't Care About What The 'Odds Are".

Answer 11

Well, give it another go... the number of good outcomes is 6, the total number of outcomes, 15... plug them into that fraction, and you've got the probability.

Answer 12

6/15?

Answer 13

Yes, much better :)
Now simplify (reduce to lowest terms, don't make it a decimal)

Answer 14

2/5

Answer 15

And that's your answer. Nicely done :D

Answer 16

Thank You.! Your Really Nice.(: Message Me.? :D