according to police sources, a car with a certain protection system will be recovered 90% of the time. If 500 stolen cars are randomly selected, what is the mean and standard deviation of the number of recovered cars?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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according to police sources, a car with a certain protection system will be recovered 90% of the time. If 500 stolen cars are randomly selected, what is the mean and standard deviation of the number of recovered cars?

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