(b) The number of customers who patronise a coffee shop follows a Poisson distribution with a mean of 20 per hour. Find the probability that: i No customer patronises the coffee shop in a time interval of 6 minutes. ii. At least one customer patronises the coffee shop in a time interval of 12 minutes.

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A: Answer:-  Option B is correct answer.  Let, X be the random variable follows Poisson distribution.

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A: It is an important part of statistics. It is widely used.

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