Operations Management
Operations Management
13th Edition
ISBN: 9781259667473
Author: William J Stevenson
Publisher: McGraw-Hill Education
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Chapter 10, Problem 27P

a)

Summary Introduction

To determine: The largest standard deviation that the machine that fills the bar mold can hold.

Introduction:

Process capability index is the measure of the capacity of a process which is the measure of ability of the process to produce the required output within specified limits.

b)

Summary Introduction

To determine: The capability of the process.

Introduction:

Process capability index is the measure of the capacity of a process which is the measure of ability of the process to produce the required output within specified limits.

c)

Summary Introduction

To determine: The lowest setting in ounces for filling machine in terms of six-bar box that will provide capability.

Introduction:

Process capability index is the measure of the capacity of a process which is the measure of ability of the process to produce the required output within specified limits.

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The Healthy Chocolate Company makes a variety of chocolate candles, including a 12-ounce chocolate bar (340 grams) and a box of six 1-ounce chocolate bars (170 grams). a.Specifications for the 12-ounce bar are 322 grams to 358 grams. What is the largest standard deviation (In grams) that the machine that fills the bar molds can have and still be considered capable if the average fill is 340 grams? (Round your intermediate calculations to 2 decimal places and final answer to 3 decimal places.) Standard deviation b.The machine that filles the bar molds for the 6-ounce bars has a standard deviation of .84 grams. The filling machine is set to deliver an average of 1.04 ounces per bar. Specifications for the six-bar box are 150 to 190 grams per box. Is the process capable? Hint: The variance for the box is equal to six times the bar variance. Convert all calculations Into grams. O Yes O No grams c.What is the lowest setting in ounces for the filling machine that will provide capability in…
I need help with part c of the question.
Sam’s Long Life 60-watt light bulbs are designed to have a life of 1,350 hours with tolerance of ± 340 hours. A recent representative sample from the process that makes these light bulbs revealed a mean of 1,290 hours, with a standard deviation of 94 hours. Compute a. Compute the process capability ratio and the process capability index, and comment on the overall capability of the process b. Explain to what extent the process for producing Sam’s Long Life 60-watt light bulbs would have to be improved to achieve 4-sigma quality. c. show detail work
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