Question: An internal study at Lahey Electronics, a large software development company, revealed the mean time for an internal e-mail message to arrive at its destination

An internal study at Lahey Electronics, a large software development company, revealed the mean time for an internal e-mail message to arrive at its destination was 2 seconds. Further, the distribution of the arrival times followed the Poisson distribution.

a. What is the probability a message takes exactly 1 second to arrive at its destination?

b. What is the probability it takes more than 4 seconds to arrive at its destination?

c. What is the probability it takes virtually no time, i.e., "zero" seconds?

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