Given
Positive test:253
Total test:378
To get the probability of positive cases divide the positive cases by total case and multiply by 100
= 253/378×100
=66.9 ( on rounding off it is 67)
=67%
Ans:A.67%
Question 23
positive case:253
Total cases:277
Probability of pregnancy=Positive case/Total positive cases
=253/277×100
=91
Ans:D.91%
A friend of yours thinks that she may be pregnant. She purchased a product to test...
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