Find the probability that download time is less


Let W denote a random variable that has a Poisson distribution with mean= 2. Find

a. P(W = 2),

b. P(W 3), and

c. P(W 3jW 1).

The New York Times reported that the mean time to download the IRS home-page is 0.8 seconds. Suppose that the download time is normally distributed with a standard deviation of 0.2 seconds.

a. What is the probability that a download time is less than 1 second?

b. What is the probability that a download time is between 0.5 and 1.5 seconds?

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Microeconomics: Find the probability that download time is less
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