To find the probability distribution for the number of white roses chosen, we calculate the probabilities for choosing 0, 1, or 2 white roses.
There are a total of 10 roses (5 yellow, 3 red, 2 white).
Probability of choosing 0 white roses:
The probability of choosing 3 non-white roses is:
\(P(0) = \frac{8}{10} \times \frac{7}{9} \times \frac{6}{8} = \frac{42}{90}\)
Probability of choosing 1 white rose:
The probability of choosing 1 white and 2 non-white roses is:
\(P(1) = \left( \frac{2}{10} \times \frac{8}{9} \times \frac{7}{8} \right) \times 3 = \frac{42}{90}\)
The factor of 3 accounts for the different orders in which the roses can be chosen.
Probability of choosing 2 white roses:
The probability of choosing 2 white and 1 non-white rose is:
\(P(2) = \left( \frac{2}{10} \times \frac{1}{9} \times \frac{8}{8} \right) \times 3 = \frac{6}{90}\)
The factor of 3 accounts for the different orders in which the roses can be chosen.
Thus, the probability distribution table is:
| No of W | 0 | 1 | 2 |
|---|
| Prob | 42/90 | 42/90 | 6/90 |