3-169. The number of content changes to a Web site follows a Poisson distribution with a mean of 0.25 per day. (a) What is the probability of two or more changes in a day? (b) What is the probability of no content changes in five days? (c) What is the probability of two or fewer changes in five days?
3-169. The number of content changes to a Web site follows a Poisson distribution with a mean of 0.25 per day. (a) What is the probability of two or more changes in a day? (b) What is the probability of no content changes in five days? (c) What is the probability of two or fewer changes in five days?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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![In the Poisson problem below. The number of content changes to a Web site is thus one change
every four days. If so, the probability of one change every four days is 1.00.
3-169. The number of content changes to a Web site follows a
Poisson distribution with a mean of 0.25
per day.
(a) What is the probability of two or more changes in a day?
(b) What is the probability of no content changes in five days?
(c) What is the probability of two or fewer changes in five days?
a.
Ut x = # 7 content changes in a day
x = 0-25 change / day
P(X22)
1 - P(X 21)
=
2
1 - [P(X=0) + P(X= 1)]
.0.25
0-25°
1
1
e
0.026
0!
+
e
-0.28
0.251](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0cdb4db3-3c5f-4709-8a4d-d3de9564d33d%2Fa2d433b6-6eb1-45a0-ac83-cdeaf6f38310%2Fboqalp_processed.jpeg&w=3840&q=75)
Transcribed Image Text:In the Poisson problem below. The number of content changes to a Web site is thus one change
every four days. If so, the probability of one change every four days is 1.00.
3-169. The number of content changes to a Web site follows a
Poisson distribution with a mean of 0.25
per day.
(a) What is the probability of two or more changes in a day?
(b) What is the probability of no content changes in five days?
(c) What is the probability of two or fewer changes in five days?
a.
Ut x = # 7 content changes in a day
x = 0-25 change / day
P(X22)
1 - P(X 21)
=
2
1 - [P(X=0) + P(X= 1)]
.0.25
0-25°
1
1
e
0.026
0!
+
e
-0.28
0.251
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