Check the assumptions for the factorial design ANOVA of Exercise 14.36. Data from Exercise 14.36 A trade-off

Question:

Check the assumptions for the factorial design ANOVA of Exercise 14.36.


Data from Exercise 14.36

A trade-off study regarding the inspection and test of transformer parts was conducted by the quality department of a major defense contractor. The investigation was structured to examine the effects of varying inspection levels and incoming test times to detect early part failure or fatigue. The levels of inspection selected were full military inspection (A), reduced military specification level (B), and commercial grade (C). Operational burn-in test times chosen for this study were at 1-hour increments from 1 hour to 9 hours. The response was failures per thousand pieces obtained from samples taken from lot sizes inspected to a specified level and burned-in over a prescribed time length. Three replications were randomly sequenced under each condition, making this a complete 3 × 9 factorial experiment (a total of 81 observations). The data for the study (shown in the table below) were subjected to an ANOVA using SAS. The SAS printout follows. Analyze and interpret the results.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Statistics For Engineering And The Sciences

ISBN: 9781498728850

6th Edition

Authors: William M. Mendenhall, Terry L. Sincich

Question Posted: