Question

A class consists of 55% boys and 45% girls. It is observed that 25% of the class are boys and scored an A on the test, and 35% of the class are girls and scored an A on the test.
If a student is chosen at random and is found to be a girl, the probability that the student scored an A is _______?

Round your answer to the nearest hundredth.

Answer 1

Why do you have the same bloody question twice?

Answer 2

^ This is spam.

Answer 3

i posted in wrong section

Answer 4

It all goes to the mathematics section, the sub-section doesn't matter

Answer 5

Okay could you just help me??

Answer 6

Ye ye. So what percentage of the boys got an A? What percentage of boys didn't get an A? What percentage of girls got an A? What percentage of girls didn't get an A?

Answer 7

Boys who got an A = 25%.
Boys who didn't get an A = 75%
Girl who got an A = 35%
Girls who didn't get an A = 65%

Answer 8

question has been resolved

Answer 9

I kind of get it? I need help with another question can i post it here

Answer 10

Boy 55%
Girl 45%

Boy A 25%
Boy No A 75%

Girl A 35%
Girl No A 65%

So the question is asking, what are the odds we choose `Girl` and `Girl A`.
45% * 35% = ?

I think that's what they're looking for here, ya? :)

Answer 11

Probability stuff always confuses me, so I could be wrong hehe

Answer 12

yes thats the method i used zepdrix

Answer 13

Which gave you about 16% right?
Somewhere around there :)

Answer 14

yes can you help me with this one?


Of all the Sunny Club members in a particular city, 25% prefer swimming on weekends and 75% prefer swimming on weekdays. It is found that 10% of the members in that city prefer swimming on weekends and are female, while 55% of the members in that city prefer swimming on weekdays and are female.
The probability that a club member picked randomly is female, given that the person prefers swimming on weekends, is _____?