# 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?

2. Recompute the upper and lower control limits for a sample size of 10,000?

3. Which of these two sample sizes would you recommend? Explain.

Management has reconsidered the method of quality control and has decided to use process control by variables instead of attributes. For variables control a circuit voltage will be measured based on a sample of only five circuits. The past average voltage for samples of size 5 has been 3.1 volts, and the range has been 1.2 volts.

1. What would the upper and lower control limits be for the resulting control charts (average and range)?

2. Five samples of voltage are taken with the results in the table below. What action should be taken if any?

3. Discuss the pros and cons of using this variables control chart versus the control chart discussed in the first part of the assignment. Which do you prefer?

Ex. 1 2 3 4 5
x 3.6 3.3 2.6 3.9 3.4
R 2.0 2.6 0.7 2.1 2.3

## Similar Questions

1. ### 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? 2.
2. ### 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

MGT635-1003B-04 International Business Operations Management Assignment Name: Unit 5 Individual Project Deliverable Length: 6-7 body pages Details: As the production manager for an electronic circuit company you have encountered
4. ### statistics2

A textbook publisher wants to determine process control charts for the textbook height. The following table shows the first 20 samples of n=4 sample size of the production of the text. Sample - X Bar - Range 1 - 10.01 - .01 2 -
5. ### Statistics

I'm stuck on this homework question. If someone can just help get me started with the first one I'm sure I can do the rest. I'm just not sure how to begin. Thanks! 1. A production process produces 90% non-defective parts. A sample
6. ### Operations Management

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
7. ### math

If 30 samples of 100 items are tested for nonconformity, and 95 of the 3,000 items are defective, find the upper and lower control limits for a -chart.
8. ### math

If 30 samples of 100 items are tested for nonconformity, and 95 of the 3,000 items are defective, find the upper and lower control limits for a p-chart.
9. ### Statistics

A bin of 35 manufactured parts contains 6 defective parts and 29 non-defective parts. A sample of size 5 parts is selected from 35 parts. Selected parts are not replaced. How many different samples are there of size five that
10. ### statistics

the percent defective for parts produced by a manufacturing process is targeted at 4%. The process is monitored daily by taking samples of sizes n=160 units. Suppose that today's sample contains 14 defectives. How many units would

More Similar Questions