If 20% of the residents in a US city prefer a white telephone over any other color available, what is the probability that among the next 1000 telephones installed in that city a.Between 170 and 185 inclusive will be white? b.At least 210 but not more than 225 will be white?

If 20% of the residents in a US city prefer a white telephone over any other color available, what is the probability that among the next 1000 telephones installed in that city a.Between 170 and 185 inclusive will be white? b.At least 210 but not more than 225 will be white?

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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Question

If 20% of the residents in a US city prefer a white telephone over any other color available, what is the probability that among the next 1000 telephones installed in that city

a.Between 170 and 185 inclusive will be white?

b.At least 210 but not more than 225 will be white?

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