The vice president of human resources at Lowes Inc. is studying the number of on-the-job accidents...
The vice president of human resources at Lowes Inc. is studying the number of on-the-job accidents over a period of one month. He developed the following probability distribution. Compute the mean and standard deviation of the number of accidents in a month. Calculation in Excel
Number of Accidents Probability
0 0.40
1 0.20
2 0.20
3 0.10
4 0.10
Homework Answers
The table of calculations is:
Hence,
Mean = 
= 1.3
Standard deviation = 
= 1.345
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