Operations Research

OperationsResearch

OperationsResearch

Question1

Numberof observations that a time study analyst should plan for

S=1.8minutes per piece

e=±.1 minute

Confidencelevel=95.5%(z=±2)

==1296observations

Numberof observations that a time study analyst should plan for is 1296.

Question2

Test

Observed mean

Expected mean

Standard deviation

Z value

Median

10

12

2.29

-0.87

Up/Down

12

14.33

1.89

-1.23

References

Moore,D. S. (2007).&nbspThebasic practice of statistics&nbsp(Vol.2). New York: WH Freeman.