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Get Full Access to Applied Statistics And Probability For Engineers - 6 Edition - Chapter 2.8 - Problem 228se
Get Full Access to Applied Statistics And Probability For Engineers - 6 Edition - Chapter 2.8 - Problem 228se

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# Consider the treatments in Exercise 2-57. Suppose a ISBN: 9781118539712 55

## Solution for problem 228SE Chapter 2.8

Applied Statistics and Probability for Engineers | 6th Edition

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Problem 228SE

Problem 228SE

Consider the treatments in Exercise 2-57. Suppose a patient is selected randomly. Let A denote the event that the patient is treated with ribavirin plus interferon alfa or interferon alfa, and let B denote the event that the response is complete. Determine the following probabilities. 2-57. The article “Term Efficacy of Ribavirin Plus Interferon Alfa in the Treatment of Chronic Hepatitis C,” [Gastroenterology (1996, Vol. 111, no. 5, pp. 1307–1312)], considered the effect of two treatments and a control for treatment of hepatitis C. The following table provides the total patients in each group and the number that showed a complete (positive) response after 24 weeks of treatment. Let A denote the event that the patient was treated with ribavirin plus interferon alfa, and let B denote the event that the response was complete. Determine the number of patients in each of the following events. Step-by-Step Solution:

Solution:

Step 1 of 3:

The total patients in each group and the number that showed a complete (positive) response after 24 weeks of treatment is given.

 Complete Response                     Total Ribavirin plus interferon alfa 16 21 Interferon alfa 6 19 Untreated controls 0 20

We have to find the following probabilities.

1. P(A/B)
2. P(B/A)
3. P(A 4. P(A B)

Step 2 of 3

Step 3 of 3

##### ISBN: 9781118539712

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