С. (x- mean)^2*P(x) x=# hours P(x) x*P(x) x^2*P(x) 1 0.08 0.08 0.79077888 0.08 0.152 0.304 0.698703872 0.608 0.212 0.636 0.277452032 1.908 4 0.18 0.72 0.00373248 2.88 0.16 0.8 0.11723776 4 6. 0.052 0.312 0.179126272 1.872 0.02 0.14 0.16313472 0.98 8. 0.144 1.152 2.141097984 9.216 4.144 4.371264 21.544 4.371264 u=4.144 o²=4.371264 or 4 hours o=2.090756801 or 2 hours Alternative calculation: x²P(x)-ự = 21.544-(4.144)2=4.371264 %3D
С. (x- mean)^2*P(x) x=# hours P(x) x*P(x) x^2*P(x) 1 0.08 0.08 0.79077888 0.08 0.152 0.304 0.698703872 0.608 0.212 0.636 0.277452032 1.908 4 0.18 0.72 0.00373248 2.88 0.16 0.8 0.11723776 4 6. 0.052 0.312 0.179126272 1.872 0.02 0.14 0.16313472 0.98 8. 0.144 1.152 2.141097984 9.216 4.144 4.371264 21.544 4.371264 u=4.144 o²=4.371264 or 4 hours o=2.090756801 or 2 hours Alternative calculation: x²P(x)-ự = 21.544-(4.144)2=4.371264 %3D
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
Hi can you explain how they got the standard deviation for C in the simplest way( excel way)
![679
1,
670
0.052
0.02
0.144
b. P(x > 4) = 1 -[P(1)+P(2)+P(3)] = 1-.444=.556
%3D
%3D
C.
-x)
mean)^2*P(x)
x=# hours
P(x)
x*P(x)
x^2*P(x)
0.08
0.08
0.79077888
0.08
0.152
0.304
0.698703872
0.608
0.212
0.636
0.277452032
1.908
0.18
0.72
0.00373248
2.88
4.
4.
1.872
0.16
0.8
0.11723776
5.
0.052
0.312
0.179126272
0.02
0.14
0.16313472
0.98
0.144
1.152 2.141097984
9.216
8.
4.144
4.371264
21.544 4.371264
u=4.144
0²=4.371264 or 4 hours
o=2.090756801 or 2 hours
Alternative calculation: x P(x)-µự = 21.544-(4.144)2=4.371264
%3D
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Transcribed Image Text:679
1,
670
0.052
0.02
0.144
b. P(x > 4) = 1 -[P(1)+P(2)+P(3)] = 1-.444=.556
%3D
%3D
C.
-x)
mean)^2*P(x)
x=# hours
P(x)
x*P(x)
x^2*P(x)
0.08
0.08
0.79077888
0.08
0.152
0.304
0.698703872
0.608
0.212
0.636
0.277452032
1.908
0.18
0.72
0.00373248
2.88
4.
4.
1.872
0.16
0.8
0.11723776
5.
0.052
0.312
0.179126272
0.02
0.14
0.16313472
0.98
0.144
1.152 2.141097984
9.216
8.
4.144
4.371264
21.544 4.371264
u=4.144
0²=4.371264 or 4 hours
o=2.090756801 or 2 hours
Alternative calculation: x P(x)-µự = 21.544-(4.144)2=4.371264
%3D
6.
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