Friday

April 18, 2014

April 18, 2014

Posted by **Emily** on Monday, April 27, 2009 at 12:48pm.

My Question is, I don't know how to do Probability.

- Math -
**Reiny**, Monday, April 27, 2009 at 12:53pmin general,

the probability of "some event"

= no of cases for that event/total number of cases

so in our case, there would be 5 boys with glasses, the "event"

the total number of students = 12

so the prob(boy with glasses) = 5/12

**Related Questions**

math - In a certain high school class, consisting of 60 girls and 40 boys, it is...

Maths - There are 36 pupils in a class. Each girl is given 8 books and each boy ...

Maths - There are 40 pupils in a class. There are 10 more boys than girls. When ...

math - 8) A high school graduating class is made up of 445 students. There are ...

Math - a class has 10 boys and 5 girls; three students are selected from the ...

math ugh" - A class has 21 students . 10 boys and 11 girls . What fraction of ...

maths - in a class there are 50 students,15 girls wear glasses 8 do not wear ...

Math - Mrs.Smith's class has 12 girls and 8 boys. What percent of he class are ...

math - The ratio of boys to girls in Mr. Joiner’s class is 5 to 7. If there are ...

math - in a class of 18 students at school there are half as many girls as boys...