FIND THE STANDARD DEVIATION The number of items sold per day at a retail store, with its corresponding probabilities, is shown in the table. Find the variance and standard deviation of the probability distribution.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.4: Fractional Expressions
Problem 65E
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FIND THE STANDARD DEVIATION

The number of items sold per day at a retail store, with its corresponding probabilities, is shown in the table. Find the variance and standard deviation of the probability distribution.

NUMBER DF ITEMS
SOLD TN X
19
2D
21
23
PROBABIUTY P
pl4)
0.20
D.20
D.30
D.ID
Transcribed Image Text:NUMBER DF ITEMS SOLD TN X 19 2D 21 23 PROBABIUTY P pl4) 0.20 D.20 D.30 D.ID
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