# poisson

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8) A car towing service company averages 3 calls per hour use the poisson distribution to determine that probability that in a randomly selected hour the number of calls is 6

#9: A book contains 400 pages. If there are 80 randomly errors randomly distributed throughout the book, use the poisson distribution to determine the probability that a page contains exactly 2 errors.
#12: A mail order company receives an average of 12 orders per 300 ads. If it sends out 100 ads, find the probability of receiving at most 4 orders. Use the poisson distribution.
The average conversion rate is 12 orders / 300 ads, or 4 orders / 100 ads. The value of λ is 4 when 100 ads are placed. Then:

#13: A mail order company receives average of 15 orders per 500 ads. If it sends out 100 ads, find the probability of receiving at most 2 orders. Use the poisson distribution.
The average conversion rate is 15/500, or 3/100. With 100 ads being sent, the value