Question: Exhibit 5-6 Probability Distribution x f( x ) 5 .2 10 .3 15 .4 20 .1 Refer to Exhibit 5-6. The variance of x equals

Exhibit 5-6

Probability Distribution

x

f(x)

5

.2

10

.3

15

.4

20

.1

Refer to Exhibit 5-6. The variance of x equals

a.

9.165
b.

84
c.

21
d.

13.33

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