Operations Management
posted by Dave
Twelve samples, each containing five parts, were taken
from a process that produces steel rods. The length of each rod in the
samples was determined. The results were tabulated and sample
means and ranges were computed. The results were:
A) Determine the upper and lower control limits and the overall
means for Ẋ charts and R  Charts.
B) Draw the charts and plot the values of the sample means and
ranges.
C) Do the data indicate a process that is in control?
D) Why or why not?
Respond to this Question
Similar Questions

PHYSICS NEED HELP FAST
A 150KG STEEL ROD IN A BUILDING UNDER CONSTRUCTION SUPPORTS A LOAD OF 6050KG. DURING THE DSY THE RODS TEMP. INCREASES FROM 22C TO 47C CAUSING THE ROD TO THERMAALLY EXPAND AND RAISE THE LOAD 5.5mm. FIND THE EGERHU TRANSFER AS HEAT TO … 
physic
An aluminum rod is 10.0 cm long and a steel rod is 80.0 cm long when both rods are at a temperature of15 degrees cel. Both rods have the same diameter. The rods are joined endtoend to form a rod 90.0 cm long. The coefficients of … 
business
MGT6351003B04 International Business Operations Management Assignment Name: Unit 5 Individual Project Deliverable Length: 67 body pages Details: As the production manager for an electronic circuit company you have encountered the … 
internationa business operations management
As the production manager for an electronic circuit company you have encountered the following situation. Part 1 A process for producing electronic circuits has achieved very high yield levels. An average of only 10 defective parts … 
college
A process for producing electronic circuits has achieved very high yield levels. An average of only 10 defective parts per million is currently produced. 1. What are the upper and lower control limits for a sample size of 100? 
Math
A process for producing electronic circuits has achieved very high yield levels. An average of only 10 defective parts per million is currently produced. 1. What are the upper and lower control limits for a sample size of 100? 
operations management
A critical dimension of the service quality of a call center is the wait time of a caller to get to a sales representative. Periodically, random samples of 6 customer calls are measured for time. Results from the last five samples … 
statistics
A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 121.2cm and a standard deviation of 1.8cm. Suppose a rod is chosen at random from all the rods produced by the company. There is … 
statistics
IQ scores are normally distributed with a mean of 105 and a standard deviation of 18. Assume that many samples of size n are taken form a large population of people and the mean IQ score is computed for each sample. If the sample size … 
chemistry
A chemist decomposes several samples of carbon monoxide into carbon and oxygen and weighs the resultant elements. The results are shown below: Sample Mass of Carbon Mass of Oxygen 1 6 8 2 12 16 3 18 24 Do you notice a pattern in these …