Nathan had an infection, and his doctor wanted him to take penicillin. Because Nathan's father and paternal grandfather were all
ergic to
penicillin, Nathan had a 75% chance of having the same allergy. The doctor performed a skin test to see whether Nathan would react to it. The
test is 98% accurate. What is the probability that Nathan is allergic to penicillin and the test predicts it?
A. 0.005
B. 0.015
C. 0.245
D.
0.735
penicillin, Nathan had a 75% chance of having the same allergy. The doctor performed a skin test to see whether Nathan would react to it. The
test is 98% accurate. What is the probability that Nathan is allergic to penicillin and the test predicts it?
A. 0.005
B. 0.015
C. 0.245
D.
0.735
1 answer:
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Using proportions, it is found that their mom put 90 candies in the bowl.
<h3>What is a proportion?</h3>A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.
For this problem, the total amount is of x, hence, from the text:
- Tom's fraction is
.
- Carlos' fraction is
.
- Mary's fraction was of:
The remaining fraction after Mary was:
This amount is of 12, hence the total number of candies was:
2x/15 = 12
2x = 15 x 12
x = 15 x 6
x = 90.
More can be learned about proportions at brainly.com/question/24372153
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