The mean of the sample means and the standard deviation of 50 samples of size 5 taken from a production process under control are found to be 300 and 25, respectively. The lower control limit for the chart is located at:
A) 333.54
B) 289.39
C) 310.61
D) 266.46
E) 342.88

Question

The mean of the sample means and the standard deviation of 50 samples of size 5 taken from a production process under control are found to be 300 and 25, respectively. The lower control limit for the  chart is located at:
A) 333.54 
B) 289.39 
C) 310.61 
D) 266.46 
E) 342.88

Quizplus · Accepted Answer

The Answer of The mean of the sample means and the standard deviation of 50 samples of size 5 taken from a production process under control are found to be 300 and 25, respectively. The lower control limit for the  chart is located at:
A) 333.54 
B) 289.39 
C) 310.61 
D) 266.46 
E) 342.88

The Mean of the Sample Means and the Standard Deviation