8. A television station sells advertising in 15-, 30-, 60-, 90-, and 120-second blocks. The distribution of sales for one 24-hour day is given. Length (in seconds) Probability 15 0.134 30 0.786 60 0.053 90 0.006 120 0.021
8. A television station sells advertising in 15-, 30-, 60-, 90-, and 120-second blocks. The distribution of sales for one 24-hour day is given. Length (in seconds) Probability 15 0.134 30 0.786 60 0.053 90 0.006 120 0.021
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
I don't know how to resolve the excercise number 8 in the picture.

Transcribed Image Text:x
Ullolled in a given semester at a university.
1
P(x) 30
80
2
7/7/15 1/0 끓
driable x represents the number of classes in which a student is
Cell phones 0
Probability
probability distribution, and (b) interpret the results.
In Exercises 7 and 8, (a) find the mean, variance, and standard deviation of the
7. The number of cell phones per household in a small town
3
4 5
6
7 8
10 12/25 %/10 3/20 12/13 12/0
0.02
Length (in seconds)
Probability
2
3
5
6
1
0.020 0.140 0.272 0.292 0.168 0.076 0.032
15
8. A television station sells advertising in 15-, 30-, 60-, 90-, and 120-second
blocks. The distribution of sales for one 24-hour day is given.
0.134
4
30
60
0.786 0.053
90
0.006
120
0.021
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