SOLUTION: In a local cellular phone area, company A accounts for 70% of the cellular phone market, while company B accounts for the remaining 30% if the market. Of the cellular calls made wi

Question 254801: In a local cellular phone area, company A accounts for 70% of the cellular phone market, while company B accounts for the remaining 30% if the market. Of the cellular calls made with company A, 2% of the calls will have some sort of interference, while 3% of the cellular calls with company B will have interference.
Given that the randomly selected cellular calls is one that has interference, what is the probability it came from company B?
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
look at 1000 calls

700 from A ___ 14 with interference

300 from B ___ 9 with interference

23 calls with interference

probability of interference call being B ___ 9/23
RELATED QUESTIONS
in a cellular phone area, company A accounts for 70% of the cellular phone market, while... (answered by robertb)

A cellular phone company offers several options for using a cellular telephone. One... (answered by stanbon)

An MTN cellular-phone user notices that her cellular phone accounts for three... (answered by Theo,ikleyn)

An MTN cellular-phone user notices that her cellular phone accounts for three consecutive (answered by ikleyn)

I need help please: A cellular phone company offers its customers a rate of $49 for up to (answered by MathTherapy)

Savio works for a cellular phone company. He is paid $90/day plus $2.00 for each... (answered by Theo)

A cellular phone company charges $50 for each phone plus $25 per month under a special... (answered by stanbon)

A telephone company offers a monthly cellular phone plan (answered by richwmiller)