Question

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?

A. 0.099

B. 0.201

C. 0.231

D. 0.469

Answer 1

@aajugdar

Answer 2

@phi

Answer 3

first, what is
What is the probability that Erin will not have a heart attack ?
use her family had a 70% risk of heart attack,

Answer 4

what is the prob the test is correct ?

multiply the two probabilities for the answer

Answer 5

well all u hv to do is multiply the probabilities of %
so 70/100 *67/100 = 7*67/1000 = 469/1000 = 0.469

Answer 6

oh he was telling .-.

Answer 7

its okay @aajugdar you did great too. I wish i could give you both metals cause i understood it both ways

Answer 8

medal doesnt matter :P

Answer 9

okayyy lml

Answer 10

I got confused there but just in case the answer is C 0.231

Answer 11

no answer C was wrong. Try 0.469 like stated above

Answer 12

Thats wrong

Answer 13

A. 0.099