Probability 5 Question 13
13. For a biased die the probabilities for the different faces to turn up are given below
| Face | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| Probability | 0.1 | 0.32 | 0.21 | 0.15 | 0.05 | 0.17 |
This die is tossed and you are told that either face 1 or face 2 has turned up. Then, the probability that it is face 1 , is… .
(1981, 2M)
Analytical & Descriptive Questions
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Answer:
Correct Answer: 13. $\frac{5}{21}$
Solution:
- Probability (face 1$)=\frac{0.1}{0.1+0.32}=\frac{0.1}{0.42}=\frac{5}{21}$
