Jenna C.

asked • 10/03/15

A bag contains 4 black, 2 red, and 6 yellow blocks. A sample of 3 is selected. How many samples are possible in which the blocks are all yellow?

I had this math problem on a quiz and cant figure out why I got it wrong. I really need the answer.

1 Expert Answer

By:

Arnold F. answered • 10/03/15

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College Professor & Expert Tutor In Statistics and Calculus

Jenna C.

A bag contains 4 black, 2 red, and 36yellow blocks. A sample of 3 is selected. How many samples are possible in which the blocks are 2 black and 1 red?
 
A bag contains 4 black, 2 red, and 6 yellow blocks. A sample of 3 is selected. How many samples are possible in which the blocks are 1 black and 2 yellow?
 
Will you please help me solve these as well?
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10/03/15

Arnold F.

Do you know what was the correct answer for the first question?
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10/03/15

Jenna C.

Yes it was 20! Thanks so much! :)
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10/03/15

Arnold F.

1. There are C(4,2) ways of choosing the black and C(2,1) for the red. These two then must be multiplied.
 
2. This one is C(4,1) x C(6,2)
 
If you have problems with alot of these questions you should consider using one of the tutors for more comprehensive
help. I'm just one of many who can do online tutoring.
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10/03/15

Jenna C.

Thank you so much for the help! I think I understand a lot better now. If I continue to help problems with this type of problem I will for sure get help. :)
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10/03/15

Arnold F.

You're welcome, and if you do decide to look for a tutor in the future and I am in the running, my online tutoring rate is lower than my posted rate.
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10/03/15

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