Part 1 The table below shows the probability distribution of the random variable X. a. Find the mean of the random variable. b. Obtain the standard deviation σ of the random variable. x 1 2 3 P(X=x) 0.7 01 0.2 a. Find the mean of the random variable. μ= (Round to two decimal places as needed.) b. Obtain the standard deviation σ= of the random variable. (Round to two decimal places as needed.)
Part 1 The table below shows the probability distribution of the random variable X. a. Find the mean of the random variable. b. Obtain the standard deviation σ of the random variable. x 1 2 3 P(X=x) 0.7 01 0.2 a. Find the mean of the random variable. μ= (Round to two decimal places as needed.) b. Obtain the standard deviation σ= of the random variable. (Round to two decimal places as needed.)
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.
Chapter13: Probability And Calculus
Section13.3: Special Probability Density Functions
Problem 40E: Pygmy Height The average height of a member of a certain tribe of pygmies is 3.2ft, with a standard...
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Part 1
The table below shows the probability distribution of the random variable X.
a.
Find the b.
Obtain the standard deviation
σ
of the random variable.
x
|
1
|
2
|
3
|
|
---|---|---|---|---|
P(X=x)
|
0.7
|
01
|
0.2
|
|
a.
Find the mean of the random variable.μ=
(Round to two decimal places as needed.)b.
Obtain the standard deviation
σ=
of the random variable.(Round to two decimal places as needed.)
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