The mean is equal toof cellular phones of sold per day istherefore, it means that the average numberTo find the variance complete the table below:P(x)x2 - P(x).2X•P(x)150.304.5180.203.6190.203.8200.15220.153.3ix2 . P(x) =g? = ) [x² · P(x)] - u² =%3D%3D%3Dwhileherefore, the variance of a probability distribution is equal tone standard deviation is equal tosuch aigherng

Given: x p(x) 15 0.3 18 0.2 19 0.2 20 0.15 22 0.15

Answered: The mean is equal to of cellular phones…

The mean is equal to of cellular phones of sold per day is therefore, it means that the average number To find the variance complete the table below: P(x) X P(x) x2 x2 P(x) 15 0.30 4.5 18 0.20 3.6 10

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter7: Applying Fractions

Section7.2: Proportions

Problem 47WE

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Question

The mean is equal to
of cellular phones of sold per day is
therefore, it means that the average number
To find the variance complete the table below:
P(x)
x2 - P(x)
.2
X•P(x)
15
0.30
4.5
18
0.20
3.6
19
0.20
3.8
20
0.15
22
0.15
3.3
ix2 . P(x) =
g? = ) [x² · P(x)] - u² =
%3D
%3D
%3D
while
herefore, the variance of a probability distribution is equal to
ne standard deviation is equal to
such a
igher
ng

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