List I | List II |
(A) Probability of yellow marble | (I) \(\frac{1}{3}\) |
(B) Probability of green marble | (II)\(\frac{7}{10}\) |
(C) Probability of either green or yellow marble | (III) \(\frac{1}{2}\) |
(D) Probability of either red or yellow marble | (IV) \(\frac{4}{10}\) |
(A)-(II), (B)-(III), (C)-(IV), (D)-(1)
Total number of marbles = \( 1 + 3 + 2 + 4 = 10 \).
Thus, the correct matches are: (C)-(IV), (B)-(I), (C)-(II), (D)-(III).
Based upon the results of regular medical check-ups in a hospital, it was found that out of 1000 people, 700 were very healthy, 200 maintained average health and 100 had a poor health record.
Let \( A_1 \): People with good health,
\( A_2 \): People with average health,
and \( A_3 \): People with poor health.
During a pandemic, the data expressed that the chances of people contracting the disease from category \( A_1, A_2 \) and \( A_3 \) are 25%, 35% and 50%, respectively.
Based upon the above information, answer the following questions:
(i) A person was tested randomly. What is the probability that he/she has contracted the disease?}
(ii) Given that the person has not contracted the disease, what is the probability that the person is from category \( A_2 \)?