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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
7.8 Using historical records, the personnel manager of a plant has determined the probability distribution of X, the number of employees absent per day. It is
x 0 1 2 3 4 5 6 7 P (x) .005 .025 .310 .340 .220 .080 .019 .001
a. Find the following probabilities.
P(2 … X … 5)
P(X > 5)
P(X 4)
b. Calculate the mean of the population.
c. Calculate the standard deviation of the population.
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