# Statistics

Four people(North, South, East, West) are each dealt 13 cards from an ordinary deck of 52 cards.

a. If South has exactly one ace, what is the probability that his partner North has the other three aces?

b. If North and South together have 10 hearts, what is the probability that either East or West has the other 3 hearts?

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1. the diameter of grapefruits in a certain orchard are normally distributed with a mean of 6.10 inches and standard deviation of 0.40 inches, what is the percentage of the grapefruits in this orchard have diameters less than 6.8 inches and what percentage are larger than 6.7 inches

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2. If you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked.

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3. Bakit walang mga sagot?

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