There are 60% of cars using gasoline, 35% are hybrid, and 5% are electric. Let X be
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Question:
- There are 60% of cars using gasoline, 35% are hybrid, and 5% are electric. Let X be the number of distinct types among n sampled cars. Find the distribution of X.
- Let X be exponential(lambda) distribution and Y be gamma(r, alpha) distribution. They are independent to each other. Find P(X>Y).
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