An X-bar and R chart with n=5 has been plotted for some time and has demonstrated random variation.
Upon review of the last 30 plot points, the expected number of runs around the centerline on the X-bar chart is expected to be approximately which of the following?

• A.16
• B.4
• C.12
• D.9

Comment: *

Name: *

Email: *

Verification: *

A normal (Gaussian) distribution curve is

• A.Positively skewed.
• B.Pear shaped.
• C.Dome shaped.
• D.Bell shaped.

Comment: *

Name: *

Email: *

Verification: *

The primary reason that nonconforming material should be identified and segregated is

• A.To obtain samples of poor workmanship for use in the company's training program.
• B.So that the cause of nonconformity can be determined.
• C.So it cannot be used in production without proper authorization.
• D.So that responsibility can be determined and disciplinary action taken.

Comment: *

Name: *

Email: *

Verification: *

In most cases, an improvement team facilitator will NOT normally:

• A.Be familiar with problem solving techniques.
• B.Summarize key ideas generated by the group.
• C.Provide feedback to the group.
• D.Function as the group leader.

Comment: *

Name: *

Email: *

Verification: *

The value for t, when making a two-tailed paired t test, with samples of 13 and alpha =0.05, is

• A.2.179
• B.2.064
• C.1.711
• D.1.782

Comment: *

Name: *

Email: *

Verification: *