Out of 10 pay telephones located in a municipal building, two phones are to be picked at

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Out of 10 pay telephones located in a municipal building, two phones are to be

picked at random, with replacement, for a study of phone use. The actual usage

of the phones on a particular day is shown in the accompanying table.image text in transcribed

(a) Find the sampling distribution of the average number of calls per phone in
the sample of two phones.
(b) Find the variance of this distribution.

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Related Book For  book-img-for-question

Statistics For Business And Financial Economics

ISBN: 9781461458975

3rd Edition

Authors: Cheng Few Lee , John C Lee , Alice C Lee

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