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A website manager has noticed that during the evening hours, about 3 people per minute check...

A website manager has noticed that during the evening hours, about 3 people per minute check out from their shopping cart and make an online purchase. She believes that each purchase is independent of others and assumes that the distribution of number of purchases per minute on the website follows Poisson distribution. If you use excel, please explain the formulas used on the cells.

  1. What is the probability that during a 1-minute period, at least one purchase is made?

  2. What is the probability that no one makes a purchase in next 2 minutes?

  3. What is the probability that no more than 5 people will make a purchase in next three

    minutes?

Math   Statistics-And-Probability   
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