Refer to the accompanying​ table, which describes the number of adults in groups of five who reported sleepwalking. Find the mean and standard deviation for the numbers of sleepwalkers in groups of five. a. The mean is (Round to one decimal place as​ needed.)   b. The standard deviation is ​(Round to one decimal place as​ needed.)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.4: Fractional Expressions
Problem 66E
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Refer to the accompanying​ table, which describes the number of adults in groups of five who reported sleepwalking. Find the mean and standard deviation for the numbers of sleepwalkers in groups of five.

a. The mean is

(Round to one decimal place as​ needed.)

 

b. The standard deviation is

​(Round to one decimal place as​ needed.)

XO - 2 3 4 5
0
1
P(x)
0.177
0.362
0.303
0.123
0.034
0.001
Transcribed Image Text:XO - 2 3 4 5 0 1 P(x) 0.177 0.362 0.303 0.123 0.034 0.001
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