43) A plant manager is concerned with the variability of beer being filled in 12 oz. cans. The most appropriate control chart would be which of the following? A) x-bar chart B) R-chart C) p-chart D) c-chart E) None of the above
43) A plant manager is concerned with the
variability of beer being filled in 12 oz. cans. The most appropriate control
chart would be which of the following?
A) x-bar chart
B) R-chart
C) p-chart
D) c-chart
E) None of the above
44) An airline company tracks the number
of lost bags that occur each day. This is best monitored by which of the
following control charts?
A) x-bar chart
B) R-chart
C) p-chart
D) c-chart
E) None of the above
45) When receiving a shipment from a
supplier, inspection must be done to check the fraction of defective products.
This is best monitored by which of the following control charts?
A) x-bar chart
B) R-chart
C) p-chart
D) c-chart
E) None of the above
46) A coffee dispenser is supposed to
dispense coffee into an 8 o.z. cup. The average amount of coffee filled into
the cup must be below 7.9. This is best monitored by which of the following
control charts?
A) x-bar chart
B) R-chart
C) p-chart
D) c-chart
E) None of the above
47) Which of the following control charts is/are
for variables?
A) x-bar chart only
B) R-chart only
C) p-chart only
D) A and B
E) A, B, and C
48) Which of the following control charts
is/are for attributes?
A) x-bar chart only
B) R-chart only
C) p-chart only
D) A and B
E) A, B, and C
49) Defects in computer hard-drives will
usually render the entire computer worthless. For a particular model, the
percent defective in the past has been 1%. If a
what would the 95.5% lower control chart limit be?
A) 0.00995
B) 0.00005
C) 0.00000
D) 0.01000
E) 0.09550
50) A quality control program is being
developed for batteries. The percent defective for these in the past has been
3%. If a sample size of 120 is taken, what would the 99.7% upper control chart
limit be?
A) 0.0812
B) 0.0767
C) 0.0611
D) 0.0307
E) 0.0471
51) Defects in marble countertops usually
require the whole top to be reconstructed. In one kitchen shop, the percent
defective in the past has been one percent. If a sample size of 30 is taken,
what should the 95.5 percent upper control limit be?
A) 0.030
B) 0.000
C) 0.046
D) 0.064
E) None of the above
52) Defects in the finish of new, custom,
automobiles usually require the whole body to be repainted. In one
“custom” shop, the percentage of defective finishes has been 2
percent. If a sample size of 10 is taken, what should the 99.7 percent upper
control limit be?
A) 0.1328
B) 0.1085
C) 0.0443
D) 0.1528
E) None of the above
Table 15-2
Given the sample results (100 units in
each sample):
Sample
Number
Number
of Errors
Fraction
Defective
1
0
0.00
2
9
0.09
3
6
0.06
4
7
0.07
5
2
0.02
6
7
0.07
7
7
0.07
8
5
0.05
9
4
0.04
10
5
0.05
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