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probability question

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Re: probability question

by rajmirra » Tue Jan 15, 2008 1:57 pm
desihokie wrote:got this on powerprep
desihokie wrote:got this on powerprep
1/8 would be my choice. What is the OA?.

25% of 156 people are self employed which is 1/4*156= 39

So people who are self employed but not married is 70-39 = 31

Probability of people who are self employed but not married is 31/248 which is 1/8.

Correct me if I am wrong.
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by mollyrg » Tue Jan 15, 2008 2:09 pm
Hi,

(According to me),
There are 3 categories
1.Married - 156
2.Self Employed - 70
3.Married & Self Employed is 25% of married = 25% of 156 = 39

So, no. of only Self Employed = 70-39 = 31

Hence, Ans: Prob = 31/248 = 1/8

molly
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by desihokie » Tue Jan 15, 2008 3:30 pm
1/8 is the right answer. I wasn't thinking right or say...was thinking too much...god, pls help me..i have only 4 days to go!!
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by sibbineni » Tue Jan 15, 2008 7:22 pm
Total people=248
married=156
selfemployed=70

25% of people are married and self employed which is

248*.25=39

So people who are not married but selfemployed is 70-39=31

Probability of people who are self employed but not married is 31/248 which is 1/8.
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