A First Course in Probability (10th Edition)
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ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
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Transcribed Image Text:15
The operator of a pumping station has observed that demand for water during early afternoon hours has an approximately exponential distribution with mean
100 cfs (cubic feet per second).
(a) Find the probability that the demand will exceed 230 cfs during the early afternoon on a randomly selected day. (Round your answer to four decimal
places.)
(b) What water-pumping capacity, in cubic feet per second, should the station maintain during early afternoons so that the probability that demand will
exceed capacity on a randomly selected day is only 0.02? (Round your answer to two decimal places.)
cfs
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