Posted by **Brenda** on Saturday, November 12, 2011 at 5:46pm.

Chapter 06, Problem 8

A tire manufacturer has been concerned about the number of defective tires found recently. In order to evaluate the true magnitude of the problem, a production manager selected ten random samples of twenty units each for inspection. The number of defective tires found in each sample are as follows:

Develop a p-chart with a z = 3.

Note. If the lower control limit is negative, round the LCL to zero.

CL = , round your answer to 3 decimal places, the tolerance is +/-0.001

UCL = , round your answer to 3 decimal places, the tolerance is +/-0.002

LCL = , round your answer to 3 decimal places, the tolerance is +/-0.002

Suppose that the next four samples selected had 6, 3, 3, and 4 defects. What conclusion can you make?

The process is out of control.

The process is in control.

## Answer This Question

## Related Questions

- Probability and Statistics 2 - Bad Wheels Tire Company is interested in ...
- Prob and Stat - A tire manufacturer guarantess that its tires will last for at ...
- Statistics/Probability - In the production of a particular model of cell phones...
- math - A company has two factories that manufacture tires. Suppose 65% of the ...
- statistics - A company has four production sections viz., S1, S2, S3 and S4 ...
- Math - Twenty tires are tested to see if they last as long as the manufacturer ...
- statitics - Suppose that a sample of n = 1,600 tires of the same type are ...
- statitics - Suppose that a sample of n = 1,600 tires of the same type are ...
- Statistics - A manufacturer makes two models of an item: model I, which accounts...
- statistics - the quality control inspector of a production plant will reject a ...

More Related Questions