# Statistical Quality Control

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• 1.
In acceptance sampling, when there is a finite probability that the lot may be accepted even if the quality is not really good, is called as __________.
• A.

Consumer’s risk

• B.

Operator’s risk

• C.

Owner’s risk

• D.

Producer’s risk

• 2.
In acceptance sampling, when there is a finite probability that the lot may be rejected even if the quality is actually good, is called as __________.
• A.

Consumer’s risk

• B.

Operator’s risk

• C.

Producer’s risk

• D.

Operator’s risk

• 3.
In double sampling plan, if the numbers of defects is in between the two cut off numbers C1 and C2 then ______________.
• A.

Accept the lot

• B.

Take another sample

• C.

none of these

• D.

Reject the lot d)

• 4.
In double sampling plan ____________.
• A.

Maximum one sample is taken

• B.

Maximum two sample is taken

• C.

Maximum three sample is taken

• D.

None of these

• 5.
Which of the following is not a sampling plan?
• A.

Single sampling plan

• B.

Triple sampling plan

• C.

Double sampling plan

• D.

Sequential sampling plan

• 6.
Which of the following statements are true regarding single sampling plans?
• A.

The lot under test will be rejected if the total defective items in the sample exceed an acceptance number “C”

• B.

All items of a random sample of size”n” must be defined and tested.

• C.

A rejected sample results in 100% sampling or return of the lot to the producer

• D.

All the above

• 7.
The maximum value of the average outgoing quality over all possible values of the proportion defective is called _____________.
• A.

Lot tolerance proportion defective (LTPD)

• B.

Average outgoing quality limit (AOQL)

• C.

Average outgoing quality (AOQ)

• D.

Acceptable quality level (AQL)

• 8.
The producer’s risk means the probability that the consumer will ______.
• A.

Accept a good lot c) accept a bad lot

• B.

Accept a bad lot

• C.

reject a bad lot

• D.

Reject a good lot

• 9.
The consumer’s risk means the probability that the consumer will ______.
• A.

Accept a good lot

• B.

Accept a bad lot

• C.

Reject a bad lot

• D.

Reject a good lot

• 10.
A decision rule to accept or reject a lot based on the results of one random sample is called a __.
• A.

Single sampling plan

• B.

Sequential sampling plan

• C.

Random sampling plan

• D.

Double sampling plan d)

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