D.Martin

A time study od a certain service task found a average cycle time of 15 minutes, with a standard deviation of 5 minutes. These figures were based on a sample of 100 measurements. Is the sample large enough that we are 95% confident that standard time is w...

A toy manufacturing makes its own wind-up motors, which are then put into its toys. While the toy manufacturing process is continous, the motors are intermittent flow. Data on the manufacture of the motors appears below. Annual demand (D)=50,000 units Set...