OPERATIONS AND SUPPLY CHAIN MANAGEMENT
OPERATIONS AND SUPPLY CHAIN MANAGEMENT
9th Edition
ISBN: 9781119448037
Author: Russell
Publisher: WILEY
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Chapter 3.S, Problem 3P
Summary Introduction

To draw: Determine whether the current sampling plan used by Metro will achieve the levels of α=0.05 and β=0.10.

Introduction: A comparison of the current sampling plan with the binomial distribution table will help to make the decision of whether the levels of α and β can be achieved or not.

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At Webster Chemical, lumps in the caulking compound could cause difficulties in dispensing a smooth bead from the tube. Even when the process is in control, there will still be an average of 4 lumps per tube of caulk. Testing for the presence of lumps destroys the product, so Webster takes random samples. The table below shows the results of the study. Determine the two-sigma upper and lower control limits for this process. Tube # Lumps   Tube # Lumps   Tube # Lumps   1 6   5 6   9 5   2 5   6 4   10 0   3 0   7 1   11 9   4 4   8 6   12 2
A manufacturer is selling pharmaceuticals that have a weight specification 199.8 to 200.2 mg, with a target value of 200 mg. Before sending its next shipment, the company collects a large sample of product and determines the mean weight of the sample is 199.89 mg, with a standard deviation of 0.035 mg. The process capability index for the current process is ____. Round to three decimal places.
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OPERATIONS AND SUPPLY CHAIN MANAGEMENT

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