drainy0uandthefish
16.12.2019 •
Mathematics
Iwill mark you
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
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Ответ:
0.099, or 9.9%
Step-by-step explanation:
She has a 70% chance to have a heart attack, therefore, she has a 30% chance that she will not.
The accuracy of the test is 67%, which means, which means there is a 33% of a false diagnosis.
The chance of both events occurring is 0.3 * 0.33, which is 0.099.
Ответ:
B ) 11x^4 - 13x^3
C ) 14^x3 - 2x^4
D ) 2x^4 - 12x^3
E) 5x^4 - 3x^3
I believe this is all right!