Question

Given the following matrix, find the probabilities in questions 3 to 7.

Democrat Republican Independent

Vote Yes 100 200 50

Vote No 180 79 25

Abstain Vote 10 20 8

3. Find the probability of selecting a Democrat who voted yes. a. 0.249 b. 0.149 c. 0.349 d. 0.449

4. Calculate the probability of selecting a Republican or yes or both. a. 0.558 b. 0.668 c. 0.338 d. 0.448

5. Determine the probability of selecting an Independent given a no vote. a. 0.088 b. 0.077 c. 0.044 d. 0.055

6. Ascertain the probability of selecting a person voting yes, given s(he) is a Democrat. a. 0.245 b. 0.445 c. 0.545 d. 0.345

7. Deduce the probability of randomly choosing a Republican. a. 0.445 b. 0.558 c. 0.645 d. 0.235

Answer 1