Multiple Choice
A quality analyst wants to construct a sample mean chart for controlling a packaging process. He knows from past experience that whenever this process is in control, package weight is normally distributed with a mean of 20 ounces and a standard deviation of two ounces. Each day last week, he randomly selected four packages and weighed each
If he uses upper and lower control limits of 22 and 18 ounces, on what day(s) , if any, does this process appear to be out of control?
A) Monday
B) Tuesday
C) Monday and Tuesday
D) Monday, Tuesday, and Thursday
E) None
Correct Answer:
Verified
Correct Answer:
Verified
Q17: Acceptance sampling, when it is used, is
Q18: Attributes need to be measured, whereas variable
Q19: A time-ordered plot of sample statistics is
Q20: Inspection is a(n)_ activity.<br>A)prevention.<br>B)capability analysis.<br>C)flawless<br>D)corrective.<br>E)appraisal.
Q21: Which of the following quality control sample
Q23: Approximately 99.7 percent of sample means will
Q24: A quality analyst wants to construct a
Q25: A quality analyst wants to construct a
Q26: The output of a process may not
Q27: The amount of inspection we choose can