A Multinational Firm Manufactures Several Types of 1280 × 1024

question 20

Multiple Choice

A multinational firm manufactures several types of 1280 × 1024 LCD displays in several locations. They designed a sampling experiment to analyze the number of pixels per screen that have significant color degradation after 52,560 hours (six years of continuous use) using accelerated life testing. The Excel ANOVA table for their experiment is shown below. Some table entries have been obscured. The response variable (Y) is the number of degraded pixels in a given display. $$\begin{array} { | l | c | c | c | c | c | c | } \hline \text { Source of Variation } & S S & d f & M S & F & P \text {-value } & F \text { crit } \\\hline \text { Country of origin } & 202.9 & & 101.45 & 4.163475 & 0.021927 & \\\hline \text { Display type } & 233.2333 & & 58.30833 & & & \\\hline \text { Interaction } & 147.7667 & & 18.47084 & & & \\\hline \text { Error } & 1096.5 & 45 & 24.36667 & & & \\\hline \text { Total } & 1680.4 & 59 & & & & \\\hline\end{array}$$ The F statistic for display effect is:

• A)1.78.
• B)3.16.
• C)2.39.
• D)2.94.

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Definitions:

Imagery

Mental pictures; a powerful aid to effortful processing, especially when combined with encoding.

Typewriter

A mechanical or electromechanical machine for writing characters similar to those produced by printer's movable type, typically by means of keys struck by the operator.

Inherent

Existing as a natural or essential part of something.

Recency Effect

The tendency to remember the most recently presented information best, often observed in serial position effect experiments.