HELP NEEDED!!

On discovering that her family had a 70% risk of heart attack, Erin took a treadmill test to check her own potential of having a heart attack. The doctors told her that the reliability of the stress test is 67%. What is the probability that Erin will not have a heart attack and the test predicts that she will?

Question

HELP NEEDED!!

On discovering that her family had a 70% risk of heart attack, Erin took a treadmill test to check her own potential of having a heart attack. The doctors told her that the reliability of the stress test is 67%. What is the probability that Erin will not have a heart attack and the test predicts that she will?

gnorris · Answer

multiple choice?

emmanuel77m · Answer

A : 0.099

B: 0.201 

C: 0.231 

D: 0.469

emmanuel77m · Answer

@gnorris

gnorris · Answer

okay hold on

emmanuel77m · Answer

I think it's B, but I'm not sure

gnorris · Answer

Well it's not B, C, D so its first answer 0.099

emmanuel77m · Answer

You sure? I can't get this wrong, if I do, I'll fail :/ @gnorris

gnorris · Answer

yes i'm a 100% sure

gnorris · Answer

it is 0.099

gnorris · Answer

i promise you, you will get it right

emmanuel77m · Answer

@Mehek14

emmanuel77m · Answer

Ok, I'll give you a medal @gnorris Thanks :)

gnorris · Answer

i passed this already in school

gnorris · Answer

and you're very welcome

emmanuel77m · Answer

It was correct!!! Thanks again :)

emmanuel77m · Answer

Can you help me with another? @gnorris