Solved: The article Readability of Liquid Crystal
Chapter 0, Problem 14.6(choose chapter or problem)
The article Readability of Liquid Crystal Displays: A Response Surface (Human Factors [1983]: 185190) used a multiple regression model with four independent variables, where y error percentage for subjects reading a four-digit liquid crystal display x1 level of backlight (from 0 to 122 cd/m) x2 character subtense (from .025 to 1.34) x3 viewing angle (from 0 to 60) x4 level of ambient light (from 20 to 1500 lx) The model equation suggested in the article is a. Assume that this is the correct equation. What is the mean value of y when x1 10, x2 .5, x3 50, and x4 100? b. What mean error percentage is associated with a backlight level of 20, character subtense of .5, viewing angle of 10, and ambient light level of 30? c. Interpret the values of b2 and b3
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