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# probability

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In a class of 21 students, 11 students passed the test. A total of 14 students completed their homework. If there are 4 students who did not pass the test AND did not complete their homework, what is the probability that a student passed the test GIVEN THAT they completed the homework?

Apr 8, 2020

#1
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Creating a two-way tables helps you visualize the problem. If you know that 11 people passed the test, then 10 people did not pass the test. 4 people didn't do their homework and didn't pass the test which means 6 people did the homework but did not pass the test. We also know that 14 students did their homework meaning that 14-6= 8 students did their homework and passed the test.

Hope it helps!

Apr 8, 2020
#2
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Do you really need to put “Hope it helps!” on every post? It’s very irritating!

Guest Apr 8, 2020
#3
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I have to give my answer some enthusiasm...

HELPMEEEEEEEEEEEEE  Apr 8, 2020
edited by HELPMEEEEEEEEEEEEE  Apr 8, 2020
#4
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That phrase is very common among the younger crowd, so it’s not a unique trade mark, but it is always irritating, and it’s never enthusiastic.

Maybe you could use a trademark similar to what CPhill uses .  But don’t copy his.

Heureka uses this

Omi67 also uses

Asinus uses this  !

Maybe you could use some combination of two or three emos that identifies you, but doesn’t distract from your answer.

Guest Apr 8, 2020
#5
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Thanks for the feedback!

🔥🔥🔥

HELPMEEEEEEEEEEEEE  Apr 8, 2020
edited by HELPMEEEEEEEEEEEEE  Apr 8, 2020