Oriental Reproductions, Inc. is a company that produces handmade carpets with oriental designs. The production records show that the monthly production has ranged from 1 to 5 carpets. The production levels and their respective probabilities are shown below.
Production
Per Month
Probability
1
0.01
2
0.04
3
0.10
4
0.80
5
0.05
The standard deviation for the production is
A. 4.32.
B. 3.74.
C. 0.374.
D. 0.612.
Answer: D
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