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bogdanovich [222]
2 years ago
15

Researchers have discovered a new genetic marker for a form of cancer. Twelve percent of the overall population carry this marke

r, and of all the people who develop this cancer, 29% carry the marker. Suppose that the total frequency of cancer incidents in the population is 3%. What is the probability that a person with the marker develops cancer?
Mathematics
1 answer:
In-s [12.5K]2 years ago
3 0

Answer:

The probability that a person with the marker develops cancer is 0.0725.

Step-by-step explanation:

Let's denote the events as follows:

<em>A</em> = a person has cancer

<em>B</em> = a person carries the marker.

<u>Given:</u>

P (A) = 0.03

P (B) = 0.12

P (B|A) = 0.29

The conditional probability of an event <em>X</em> provided that another event <em>Y</em> has already occurred is:

P(X|Y)=\frac{P(Y|X)P(X)}{P(Y)}

Use the conditional probability formula to compute the probability that a person with the marker develops cancer.

P(A|B)=\frac{P(B|A)P(A)}{P(B)} =\frac{0.29\times0.03}{0.12}=0.0725

Thus, the probability that a person with the marker develops cancer is 0.0725.

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