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.
(2)