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. At which of the following values would the lower control limit for the chart be located?
A) 333.54
B) 310.61
C) 289.39
D) 266.46

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. At which of the following values would the lower control limit for the  chart be located?
A) 333.54 
B) 310.61 
C) 289.39 
D) 266.46

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. At which of the following values would the lower control limit for the  chart be located?
A) 333.54 
B) 310.61 
C) 289.39 
D) 266.46

The Mean of the Sample Means and the Standard Deviation