Tuesday, February 8, 2011

Satistics - another Probability question about heart disease - help


Satistics - another Probability question about heart disease - help?
31 men and 29 women at a clinic are classified as high or low risk cases for heart disease. The following results are obtained: Men Women Total High risk 27 2 29 Low risk 4 27 31 Total 31 29 60 One patient is selected at random from 60 patients. Which one of the statements below is correct? (1) The probability that this patient will be a man and classified as high risk is equal to 0.8710. (2) The probability that the patient is a woman is equal to 0.4833. (3) The probability that the patient will not be a woman and not be classified as high risk is equal to 0.1290. (4) The probability that a high risk patient is not selected is equal to 0.4833. (5) The two events [the patient is a man] and [the patient is a woman] are independent events.
Mathematics - 1 Answers
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