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Asked Jul 31, 2012, 04:28 AM — 24 Answers
republican democrat independent
male 46 39 1
female 5 9 0

1. randomly select one senator, what is the probability of getting a republican, given that a male was selected?

2. randomly select one senator, what is the probability of getting a male, given that a republican was selected?

3. randomly select 1 senator, wht is the probability of getting a female, given that an independent was selected?

4. randomly select 1 senator, what is the probability of getting a democrat or independent, given that a male was selected?

5. randomly select 2 senators, what is the probability of getting a democrat female and a republican male?

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24 Answers
Curlyben's Avatar
Curlyben Posts: 18,081, Reputation: 8728
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#2

Jul 31, 2012, 04:34 AM
So what do YOU think ?
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ccny_miah's Avatar
ccny_miah Posts: 15, Reputation: 1
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#3

Jul 31, 2012, 04:42 AM
1. 46/86?
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ccny_miah's Avatar
ccny_miah Posts: 15, Reputation: 1
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#4

Jul 31, 2012, 05:13 AM
Quote:
Originally Posted by Curlyben View Post
So what do YOU think ?
is it correct?
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ebaines's Avatar
ebaines Posts: 10,046, Reputation: 5534
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#5

Jul 31, 2012, 05:47 AM
Quote:
Originally Posted by ccny_miah View Post
1. 46/86?
Correct - there are 46 republicans out of 86 males. Of course you can simplify that fraction.

What answers did you come up with for the other questions?
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ccny_miah's Avatar
ccny_miah Posts: 15, Reputation: 1
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#6

Jul 31, 2012, 05:57 AM
2. 46/86?
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ebaines's Avatar
ebaines Posts: 10,046, Reputation: 5534
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#7

Jul 31, 2012, 06:01 AM
Quote:
Originally Posted by ccny_miah View Post
2. 46/86?
Correct numerator. But the denominator should be equal to the total number of republicans - what number is that?
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ccny_miah's Avatar
ccny_miah Posts: 15, Reputation: 1
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#8

Jul 31, 2012, 06:27 AM
Quote:
Originally Posted by ebaines View Post
Correct numerator. But the denominator should be equal to the total number of republicans - what number is that?
i meant, 46/51.
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ccny_miah's Avatar
ccny_miah Posts: 15, Reputation: 1
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#9

Jul 31, 2012, 06:32 AM
3. 0/1?
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ebaines's Avatar
ebaines Posts: 10,046, Reputation: 5534
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#10

Jul 31, 2012, 08:25 AM
Yes - answers for 2 and 3 are both correct. It seems you have the technique down nicely. Looking forward to seeing what you get for number 5.
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