lease answer the following True or False questions: A process is capable if spec
ID: 470682 • Letter: L
Question
lease answer the following True or False questions:
A process is capable if special cause variations are below the center line.
True ______ False______
Random variation falls outside the control limits.
True ______ False______
Control charts are used to determine if there are unexpected variation in the process.
True ______ False______
Three items in parallel, each having a reliability of 0.90 have an overall system reliability of 0.999.
True ______ False______
The lower control limit for some control charts can be negative.
True ______ False______
A stable process may not produce good output
True ______ False______
Effective benchmarking must be against the best company in the same industry.
True ______ False _______
A Six Sigma process must have a process capability index of 2.0 or higher.
True _____ False________
There is no slack time on the critical path
True ______ False______
An activity cannot be longer than its pessimistic time estimate
True ______ False_____
Please provide the answers of each true and false thank you.
Explanation / Answer
A process is capable only if variations due to common causes are reduced and variations due to special causes are eliminated. So the statement is false
Random variations may fall outside the control limits. So statement can be deemed as true.
Control charts are used to determine if there are unexpected variation in the process. They are used to determine if a process has been operating in statistical control. They also aid in maintaining statistical control.
Three items in parallel, each having a reliability, each having a reliability of .9 will have an overall system reliability of .9^3 = .729. So the statement is false.
LCL for some control charts can never be negative. The minimum value should be 0
A stable process may not produce good output.
Effective benchmarking must be against the best companies in the industry.
A six sigma process must have a process capability index of greater than 1.5. So the statement is false.
The statement is true – there is zero slack time on the critical path.
An activity cannot take longer time than the pessimistic time estimate. The longest path that an activity can take is defined by the critical path.
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