A quality analyst wants to construct a control chart for determining whether three machines, all producing the same product, are in control with regard to a particular quality variable. Accordingly, he sampled four units of output from each machine, with the following results

For upper and lower control limits of 23.29 and 16.71, which machine(s), if any, appear(s)to have an out-of-control process mean?
A)machine #1
B)machine #2
C)machine #3
D)all of the machines
E)none of the machines

Question

A quality analyst wants to construct a control chart for determining whether three machines, all producing the same product, are in control with regard to a particular quality variable. Accordingly, he sampled four units of output from each machine, with the following results

For upper and lower control limits of 23.29 and 16.71, which machine(s) , if any, appear(s) to have an out-of-control process mean?

For upper and lower control limits of 23.29 and 16.71, which machine(s), if any, appear(s)to have an out-of-control process mean?
A)machine #1 
B)machine #2 
C)machine #3 
D)all of the machines 
E)none of the machines

Quizplus · Accepted Answer

The Answer of A quality analyst wants to construct a control chart for determining whether three machines, all producing the same product, are in control with regard to a particular quality variable. Accordingly, he sampled four units of output from each machine, with the following results

For upper and lower control limits of 23.29 and 16.71, which machine(s), if any, appear(s)to have an out-of-control process mean?
A)machine #1 
B)machine #2 
C)machine #3 
D)all of the machines 
E)none of the machines

A Quality Analyst Wants to Construct a Control Chart for Determining