Refer to the Harris Corporation/ University of Florida study to determine whether a manufacturing process performed at

Question:

Refer to the Harris Corporation/ University of Florida study to determine whether a manufacturing process performed at a remote location can be established locally, Exercise 2.72. Test devices (pilots) were set up at both the old and new locations and voltage readings on 30 production runs at each location were obtained. The data are reproduced in the table. Descriptive statistics are displayed in the SAS printout at the bottom of the page. (Note: Larger voltage readings are better than smaller voltage readings.)

a. Compare the mean voltage readings at the two locations using a 90% confidence interval.

b. Based on the interval, part a, does it appear that the manufacturing process can be established locally?

Data from Exercise 2.72

A Harris Corporation/University of Florida study was undertaken to determine whether a manufacturing process performed at a remote location can be established locally. Test devices (pilots) were set up at both the old and new locations and voltage readings on the process were obtained. A “good process” was considered to be one with voltage readings of at least 9.2 volts (with larger readings being better than smaller readings).

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