Following is the probability distribution for the age of a student at a certain public high school. x 13 14 15 16 17 18 Px 0.09 0.24 0.23 0.28 0.14 0.02 (a) Find the standard deviation of the ages. (b) Find the variance of the ages.
Following is the probability distribution for the age of a student at a certain public high school. x 13 14 15 16 17 18 Px 0.09 0.24 0.23 0.28 0.14 0.02 (a) Find the standard deviation of the ages. (b) Find the variance of the ages.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Question
Following is the probability distribution for the age of a student at a certain public high school.
x
|
13
|
14
|
15
|
16
|
17
|
18
|
Px
|
0.09
|
0.24
|
0.23
|
0.28
|
0.14
|
0.02
|
(a) Find the standard deviation of the ages.
(b) Find the variance of the ages.
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