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Multiple Choice Quiz
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1
A process that is generating output that varies randomly would be judged to be in control.
A)True
B)False
2
Attributes are characteristics that can be counted.
A)True
B)False
3
Narrowing control limits from 3s to 2s will increase the probability of making a Type I error.
A)True
B)False
4
Prior to determining if a process is in control, it is important to see if the process is capable of meeting specifications.
A)True
B)False
5
Nonrandom process variations can be reduced through statistical quality control.
A)True
B)False
6
Process control strives to weed out defective product before it is shipped to customers.
A)True
B)False
7
Variations in the characteristics (e.g., weight) of process output provide the rationale for process control.
A)True
B)False
8
When 20 or more samples are taken, the results are combined to obtain a sampling distribution.
A)True
B)False
9
The mean of a sampling distribution of means is equal to the mean of the process distribution.
A)True
B)False
10
Inspection is an appraisal activity that compares process output to a standard.
A)True
B)False
11
Convenience is a dimension of product quality.
A)True
B)False
12
Statistical process (SPC) control involves acceptance sampling.
A)True
B)False
13
In order for a process to be deemed capable, it must have a capability ratio of at least 1.33.
A)True
B)False
14
The larger the sample size, the narrower the sampling distribution.
A)True
B)False
15
Approximately half of the values on a control chart should be above the center line.
A)True
B)False
16
A point which is outside of the lower control limit on a c-chart:
A)is an indication that no cause of variation is present
B)should be ignored because it signifies better than average quality
C)should be investigated because an assignable cause of variation might be present
D)should be ignored unless another point is outside that limit
E)is impossible since the lower control limit is always zero
17
How many A/B median runs are there in this data? 3 5 4 8 7 6 4 3 2 9
A)2
B)3
C)4
D)5
E)6
18
How many up/down runs are there in this data? 5 2 3 5 4 5 2 1 2 4
A)2
B)3
C)4
D)5
E)6
19
Which type of control chart would be appropriate if the variable being monitored is the number of students absent from section 1 of a statistics class?
A)x-bar
B)p
C)r
D)c







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