Answer:
Hence, the probability that Erin will have a heart attack and the test predicts it is:
0.469
Step-by-step explanation:
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%.
The probability that she will have an heart attack and the test predicts it is:
70% of 67%.
[tex]=\dfrac{70}{100}\times \dfrac{67}{100}\\\\=0.469[/tex]
Hence, the probability that Erin will have a heart attack and the test predicts it is:
0.469
