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Chapter 8: Discrete Probability Distributions
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We can use the
Poisson Distribution
workbook to help with the
computations. Figure 8-23 shows the output from the workbook. Observe
that
P
(
X
= 0) = 0.1353 (to four decimal places).
Figure 8-23:
Display of the Poisson Distribution
Workbook for
Example 8-20
(b) What is the probability that one cancellation will occur on a particular
Monday?
Solution:
(b) The time period
= 1 since the average is given as per day
and thus a Monday will represent a time period of 1 day. Also, the average
number of cancellation is
= 2 and
X
= 1. Now,
That is, the probability of one cancellation is 0.2707, correct to four decimal
places.
Figure 8-23
shows that
P
(
X
= 1) = 0.2707 to four decimal places.
Click here for the Poisson Probability Distribution Workbook