1-20chapter stats

The target nominal value for the inside diameter is 1

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ze 7 are drawn with = 33.33 and What is the A-B 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 R-chart? A. (2.345 8.955) B. (.076 1.924) C. (.415 1.585) D. (.429 10.871) = 33.33 and 1-1679 = 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 p-chart? 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 p-chart. 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 p-chart. A. (.0134 .0410) B. (0 .0962) C. (.0042 .0502) D. (.0239 .0304) 1-1680 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 p-chart. A. (0 .1044) B. (.003 .017) C. (0 .0311) D. (.009 .0115) 1-1681 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 1-1682 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) 1-1683 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 1-1684 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...
View Full Document

This document was uploaded on 01/20/2014.

Ask a homework question - tutors are online