The Number of People Arriving at a Bicycle Repair Shop

Short Answer

The number of people arriving at a bicycle repair shop follows a Poisson distribution with an average of 5 arrivals per hour. Let x represent number of people arriving per hour.
What is the probability that seven people arrive at the bike repair shop in a one hour period of time?
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What is the probability that at most seven people arrive at the bike repair shop in a one hour period of time?
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What is the probability that more than seven people arrive at the bike repair shop in a one hour period of time?
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What is the probability that between 4 and 9 people, inclusively, arrive at the bike repair shop in a one hour period of time?
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