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6. An Christmas box contains 40 yellow balls and 60 blue balls. (a) Let X be the number of yellow balls in a sample of

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6. An Christmas box contains 40 yellow balls and 60 blue balls. (a) Let X be the number of yellow balls in a sample of size 20 if the sampling is done with replacement. What is the distribution of X (name and parameters)? (2 marks) (b) What is the probability of getting exactly 10 yellow balls in a sample of size 20 If the sampling is done with replacement? (2 marks)

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