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b. The arrival of customers during business hours at a supermarket checkout is thought to follow a Poisson distribution with a mean of 5 arrivals
b. The arrival of customers during business hours at a supermarket checkout is thought to follow a Poisson distribution with a mean of 5 arrivals in each 2-minute period.
- Let Y be the variable representing the number of arrivals at the checkout during a 10-minute period. State the type of distribution Y has and its parameter/s and use this to determine the probability of less than 8 arrivals at the checkout in a 10-minute period. (4 marks)
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