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# A certain manufactured product is supposed to contain 23%

ISBN: 9780073401331 38

## Solution for problem 4E Chapter 6.4

Statistics for Engineers and Scientists | 4th Edition

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Statistics for Engineers and Scientists | 4th Edition

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Problem 4E

Problem 4E

A certain manufactured product is supposed to contain 23% potassium by weight. A sample of 10 specimens of this product had an average percentage of 23.2 with a standard deviation of 0.2. If the mean percentage is found to differ from 23, the manufacturing process will be recalibrated.

a. State the appropriate null and alternate hypotheses.

b. Compute the P-value.

c. Should the process be recalibrated? Explain.

Step-by-Step Solution:
Step 1 of 3

CH 4 Product and Service Design p.132 Overview: To be successful in the design of PorS one must continually look at what the customers want, new technologies, regulations, and most importantly monitor what the competition is doing. Key principles for successful design: 1. Determine what customers want 2. Minimize the number of parts needed to manufacture an item or the # of steps to provide a service. 3. Simplify assembly or service 4. Standardize as much as possible 5. Make the design robust Central Issues: Actual or expected demand for the PorS. The organization’s capabilities. Cost to produce or provide. Desired quality level. C

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A certain manufactured product is supposed to contain 23%