The number of hits on a certain website follows a Poisson distribution with a mean rate of

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The number of hits on a certain website follows a Poisson distribution with a mean rate of 4 per minute.
a. What is the probability that 5 messages are received in a given minute?
b. What is the probability that 9 messages are received in 1.5 minutes?
c. What is the probability that fewer than 3 messages are received in a period of 30 seconds?
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...
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