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Unformatted text preview: ze 7 are drawn with = 33.33 and What is the AB upper boundary for the
A. 35.697
B. 34.908
C. 34.347
D. 34.008 = 5.65, chart? 81. If 20 samples of size 7 are drawn with
What are the UCL and LCL for the Rchart?
A. (2.345 8.955)
B. (.076 1.924)
C. (.415 1.585)
D. (.429 10.871) = 33.33 and 11679 = 5.65, Chapter 01  An Introduction to Business Statistics 82. From 20 samples of size 100, total of 80 units is defective. What is the centerline for the
pchart?
A. .04
B. .4
C. .8
D. .08 83. In 20 samples there are a total of 80 units defective. If each sample consists of 100 units,
find the appropriate UCL and the LCL for the pchart.
A. (.0269 .0531)
B. (.0204 .0596)
C. (.0380 .0420)
D. (0 .0988) 84. Assume that 25 samples of 50 each are taken and the total number of defectives is 34.
Calculate
A. .680
B. .453
C. .816
D. .0272 . 85. Assume that 25 samples of 50 each are taken and the total number of defectives is 34.
Find the LCL and UCL for the pchart.
A. (.0134 .0410)
B. (0 .0962)
C. (.0042 .0502)
D. (.0239 .0304) 11680 Chapter 01  An Introduction to Business Statistics 86. Use this information about 10 shipments of light bulbs: If 400 bulbs are selected at random from each of 10 shipments and the number of defectives
in each shipment is given above, find the appropriate center line.
A. .005
B. .05
C. .0025
D. .01 87. Use this information about 10 shipments of light bulbs: If 200 light bulbs are selected at random from each of 10 shipments and the number of
defectives in each shipment is given above, find the LCL and the UCL for the pchart.
A. (0 .1044)
B. (.003 .017)
C. (0 .0311)
D. (.009 .0115) 11681 Chapter 01  An Introduction to Business Statistics 88. A foreman wants to use an
chart to control the average length of the bolts
manufactured. He has recently collected the six samples given below. Calculate the mean of the means
A. 2.010
B. 2.406
C. 2.000
D. 2.005 . 89. A foreman wants to use an
chart to control the average length of the bolts
manufactured. He has recently collected the six samples given below. Calculate the average range.
A. .036
B. .18
C. .030
D. .05 11682 Chapter 01  An Introduction to Business Statistics 90. A foreman wants to use an
chart to control the average length of the bolts
manufactured. He has recently collected the six samples given below. Determine the LCL and the UCL for the
A. (1.975 2.035)
B. (1.915 2.095)
C. (1.983 2.027)
D. (1.991 2.019) chart. 91. A foreman wants to use an
chart to control the average length of the bolts
manufactured. He has recently collected the six samples given below. Determine the LCL and the UCL for the R chart.
A. (0 .0685)
B. (0 .076)
C. (0 .03)
D. (0 .0601) 11683 Chapter 01  An Introduction to Business Statistics 92. A fastener company produces bolts with a nominal (target) length of 2.00 inches. The
specifications are 2.00 ± .006 inches.
Determine the upper specification limit and the lower specification limit for this process.
A. (1.982 2.018)
B. (1.94 2.06)
C. (1.994 2.006)
D. (1.99 2.01) 93. A fastener company produces bolts with a nominal (target) length of 2.00 inches. The
specifications are 2.00 ± .006 inches.
If the process mean is equal to the target value and the process standard deviation is .0016
determine the value of Cpk.
A. 1.250
B. 3.750
C. 2.00
D. 1.998 94. A fastener company produces bolts with a nominal (target) length of 2.00 inches. The
specifications are 2.00 ± .006 inches.
If the process mean is 2.001 and the process standard deviation is .0016, determine the value
of Cpk.
A. 1.042
B. 1.25
C. 2.001
D. 1.458 95. A fastener company produces bolts with a nominal (target) length of 2.00 inches. The
specifications are 2.00 ± .006 inches.
If the process mean is 2.001 and the process standard deviation is .0016, determine the
estimated standard deviations of leeway for this process.
A. .0016
B. .0048
C. 1.375
D. .125 11684 Chapter 01  An Introduction to Business Statistics 96. A fastener company produces a certain type of bolt for the automobile industry with a
nominal (target) length of 2.00 inches. The specifications for the length of the bolt are 2.00
± .006 inches. An automobile manufacturing company will only purchase from this company
if the sigma level of capability of the process is at least 4. If the process mean is equal to
2.001, determine the maximum process standard deviation necessary for the fastener
manufacturing company in order to qualify as a supplier for the automobile manufacturing
company.
A. .0125
B. .005
C. .00125
D. .00025 97. Suppose that and R charts are based on subgroups of size four are being used to monitor the tire diameter size of a new radial tire manufactured by a tire company. The
and R charts are found to be in statistical control with
inches. A histogram
of the tire diameter measurements indicates that distribution of these measurements is
approximately normally distributed.
If the tire diameter specifications are 50 inches ± 1 inch, is the process capable of meeting the
specifications?
A. Yes
B. No 98. Suppose that
and R charts are based on...
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 Winter '14

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