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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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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