Answer:
Step-by-step explanation:
Given that Erin took a treadmill test to check her own potential of having a heart attack. 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%.
When the test predicted that Erin will not have a heart attack, it reliability is 0.67
But she had a heart attack
i.e. Prob for test saying no heart attack but she had heart attack
=P(test is wrong)*P(she had heart attack)
=(1-0.67)(0.70)
=0.33*0.70
=0.231
