What is the standard deviation of the probability distribution below? x P(X = x) %3D 10.27 20.28 30.45 Oo = 8.29 68.76 o = 544.00 =21.80

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.2: Introduction To Probability
Problem 66E
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What is the standard deviation of the probability distribution below?
x P(X x
10.27
20.28
30.45
Oo = 8.29
O o = 68.76
Oo-544.00
Oo=21.80
Transcribed Image Text:What is the standard deviation of the probability distribution below? x P(X x 10.27 20.28 30.45 Oo = 8.29 O o = 68.76 Oo-544.00 Oo=21.80
W 3. Look at the relative-frequency table below of the probability distribution for the frequency with which customers buy items, with discrete random variable X = "number
items purchased by a customer."
All changes sav
%3D
x P(X = x)
1.02
2.17
3.29
4.27
5.15
6.07
7.03
What is the standard deviation?
O o = 1.67
Oo=1.32
O o = 1.01
o = 1.45
Transcribed Image Text:W 3. Look at the relative-frequency table below of the probability distribution for the frequency with which customers buy items, with discrete random variable X = "number items purchased by a customer." All changes sav %3D x P(X = x) 1.02 2.17 3.29 4.27 5.15 6.07 7.03 What is the standard deviation? O o = 1.67 Oo=1.32 O o = 1.01 o = 1.45
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ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,