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3 cards from this section. Quick, good the night before a test.
If the average number of cars passing an intersection is 10 per hour, what is the probability of exactly 5 cars arriving in the next hour?
Use the Poisson formula with λ = 10.
How would you express the probability of no events occurring when λ = 3?
Remember the factorial of zero is 1.
What is the mean of a Poisson distribution?
Recall the properties of Poisson distribution.
True or False: The variance of the Poisson distribution is equal to its mean.
Think about the formula relating mean and variance.
A library gains, on average, 2 new books every week. What is the probability that it will gain exactly 5 new books next week?
Apply the Poisson formula providing your λ and k.
During a busy season, a restaurant receives about 10 customers every hour. Calculate the probability that between 8 to 12 customers arrive during the next hour.
Start with individual probabilities and use the Poisson formula for each case.
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