Question

A company is about to launch a new cell phone model. In the past, 40% of its cell phones have launched successfully. Before any cell phone is launched, the company conducts market research and receives a report predicting favorable or unfavorable sales. In the past, 70% of successful cell phones and 20% of unsuccessful cell phones received favorable reports. What is the probability that the new cell phone will receive a favorable report, given that the cell phone launch is successful?
0.45
0.54
0.64
0.70

Answer 1

A - the event that sales repors are favorable.
B - the event that the launch is successful

Find:\[
\Pr(A|B)
\]

Answer 2

In the past, 40% of its cell phones have launched successfully
This means \[
\Pr(B) = 0.4
\]

Answer 3

Thanks wio

Answer 4

You finished it?

Answer 5

Yes:-)

Answer 6

But why did you ask then?

Answer 7

I logged out for a few minutes, an email pops up saying you replied, I used the equation and completed the problem.
;-)

Answer 8

What equation did you use?

Answer 9

A certain probability formula.

Answer 10

wait wait wait if (A) is 90% and assuming (B) is 40% how do you use that formula ? Or what formula do you use ??