Relative frequency-patient weight and surgical recovery

Reference no: EM1389852

1. A medical research project examined the relationship between the subject's weight and recovery time from surgical procedure, as shown in the table below.

Underweight Normal weight Overweight Totals

Less than 5 days 8 20 6

5 to 9 days 35 85 10

Over 9 days 18 45 37

Totals

a. Use relative frequency to develop a joint probability table to show the marginal probabilities.

b. What is the probability a patient will recover in fewer than 5 days?

c. Given that recovery takes over 9 days, what is the probability the patient is overweight?

Reference no: EM1389852

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