A car hire firm has two cars, which it hires out day by day. The number of demands for a car on each day is distributed as a Poisson distribution with mean 1.5. Calculate the proportion of days on which neither car is used and the proportion of days on which some demand is refused. (e-1.5 = 0.2231).

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
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Chapter11: Data Analysis And Displays
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A car hire firm has two cars, which it hires out day by day. The number of demands for a car on each
day is distributed as a Poisson distribution with mean 1.5. Calculate the proportion of days on which
neither car is used and the proportion of days on which some demand is refused. (e-lS = 0.2231).
Transcribed Image Text:A car hire firm has two cars, which it hires out day by day. The number of demands for a car on each day is distributed as a Poisson distribution with mean 1.5. Calculate the proportion of days on which neither car is used and the proportion of days on which some demand is refused. (e-lS = 0.2231).
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