Question

A friend of yours thinks that she may be pregnant. She purchased a product to test for pregnancy and found the following data provided in the product brochure (actual data) Pregnancy Test Result True Status Positive Negative Total Pregnant 24 277 Not Pregnant 93 101 Total 261 117 378 Turning to you for advice, your friend asks. "If the test says that I am pregnant, what is the probability thal I really am pregnant?" Your answer is: • O A. 67% B. 79% • O C. 85% • O D. 97% • O E. 100% Resct Selection Question 23 of 30 1.0 Points Refer to the scenario and data above. Your friend is convinced that you actually know what you are talking about, so she asks, "If I really am pregnant, what is the probability that the test will discover that fact?" You confidently reply • O A. 57% • O B. 79% • O C. 88% • O D. 91%

Answer 1

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%

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