The frequency relative frequency distribution Round relative frequencies to the

Question

The frequency relative frequency distribution Round relative frequencies to the Construct the corresponding related frequency distribution. Round relative frequency to the nearest hundredth of a percent if necessary Use Baye's theorem to find the indicated probability. Refer to the table which summarizes the results of testing for a certain disease. A test Subject is randomly selected and tested for the disease. What is the probability the Subject does not have the disease given that the test result is positive? A) 0.686 B) 0.229 C) 0.771 D) 0.122 Refer to the table which summarizes the results of testing for a certain disease. A test subject is randomly selected and tested for the disease. What is the probability the subject has the disease given that the test result is negative? A) 0.03 B) 0.97 C) 0.109 D) 0 208

Explanation / Answer

17)

option B is correct

18)

probability=25/(25+84)= 0.229

therefore option B is correct

19)

probability=10/(10+326)=0.030

therefore option A is correct

Income Freq freq/total freq 200-300 70 23.81% 301-400 57 19.39% 401-500 70 23.81% 501-600 87 29.59% >600 10 3.40% 294

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