Question

Find the standard deviations of the random variables. The mean for part a is 11.5, and the mean for part b is 6. a) x P(X = x) 5 0.1 10 0.5 15 0.4 b) x 2 4 6 8 P(X = x) 0.1 0.2 0.3 0.4 a) The standard deviation is (Round to one decimal place as needed.) b) The standard deviation is (Round to one decimal place as needed.)

          Find the standard deviations of the random variables. The mean for part a is 11.5, and the mean for part b is 6.
a) x
P(X = x)
5
0.1
10
0.5
15
0.4
b) x
2
4
6
8
P(X = x)
0.1
0.2
0.3
0.4
a) The standard deviation is 
(Round to one decimal place as needed.)
b) The standard deviation is 
(Round to one decimal place as needed.)

Find the standard deviations of the random variables. The mean for part a is 11.5, and the mean for part b is 6.
a) x
P(X = x)
5
0.1
10
0.5
15
0.4
b) x
2
4
6
8
P(X = x)
0.1
0.2
0.3
0.4
a) The standard deviation is
(Round to one decimal place as needed.)
b) The standard deviation is
(Round to one decimal place as needed.)

Added by Katie M.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Hoan Nguyen

05/01/2024

Step 1

Step 1: The standard deviation is the square root of the variance. Show more…

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Find the standard deviations of the random variables. The mean for part a is 11.5, and the mean for part b is 6. a) x | 5 | 10 | 15 P(X = x) | 0.1 | 0.5 | 0.4 b) x | 2 | 4 | 6 | 8 P(X = x) | 0.1 | 0.2 | 0.3 | 0.4 a) The standard deviation is (Round to one decimal place as needed.) b) The standard deviation is (Round to one decimal place as needed.)