Out of 10 pay telephones located in a municipal building, two phones are to be picked at
Question:
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.
(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
Statistics For Business And Financial Economics
ISBN: 9781461458975
3rd Edition
Authors: Cheng Few Lee , John C Lee , Alice C Lee
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