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. 
How many countries were studied?
Definitions:
Programming Languages
Formal languages comprising a set of instructions that produce various kinds of output, used in computer programming to implement algorithms.
Storage Space
The total amount of data that can be saved in a given storage medium or system, such as a hard drive or cloud storage.
Operating Systems
Software that manages computer hardware, software resources, and provides common services for computer programs.
C
A programming language originally developed for system programmers.
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