SOLUTION: Can someone help me to solve this problem. Thx in adv. At the college of Old Westbury, 20% of the students are business majors and the rest major in something else. Although 70

Question 318374: Can someone help me to solve this problem. Thx in adv.
At the college of Old Westbury, 20% of the students are business majors and the rest major in something else. Although 70% of the students majors take finite mathematics, only 10% of the other majors take finite mathematics. A student is chosen at random. She is taking finite mathematics. What is the probability she is a business major?
Can you show me how you did it, this way I learn how to do it too. Thx.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The solution is a long story.
----
P(bm|fm) = P(bm and fm)/P(fm)
----
= P(bm and fm)/[P(fm and bm)+P(fm and not bm)]
---
= [0.2*0.7]/[0.2*0.7 + 0.1*0.8] = 0.14/0.22 = 7/11
========================================================
Cheers,
Stan H.
RELATED QUESTIONS
Please, please and thx in adv. I have been studying for almost 4 days already for my... (answered by stanbon)

Hi. Can someone help me with some reassurance on this problem. The students of a... (answered by richwmiller)

Please help me solve this problem. The combined math and verbal scores for students... (answered by ewatrrr,Theo)

using compound angle formula find a) tan 165 (book ans is -2+square root 3) b) sec 165 (answered by ikleyn)

Can you help me with this problem There are 300 students at a college that prepare... (answered by stanbon,ikleyn)

At a college, 6 out of 8 students are sophomores. If 9 students are surveyed, find a) the (answered by richwmiller)

``At a college, 6 out of 8 students are sophomores. If 9 students are surveyed, find a)... (answered by stanbon)

Differentiation:using product rule Plz help x^2(x+3)^20 Thx in adv (answered by Edwin McCravy)

I am having issues finding the answer to this statistics problem. Please help me work... (answered by rothauserc)