Morgan Solar develops optical systems for concentrating sunlight on solar cells and sells the resulting solar systems in Southern California and other locations with intense direct sunlight. They continuously come up with new optical designs that need testing in a range of environmental conditions, from arid deserts to more humid coastal sites. Researchers aim to produce a single design that works well in all conditions. A trial of four designs randomly arranged at four sites could typically produce the following annual amounts of electricity generated, measured in kilowatt-hours per dollar of capital cost:

a) What type of experimental design is used here?

b) Conduct the appropriate ANOVA analysis with α = 0.05.

c) Write a three-sentence report on your analysis for Morgan Solar.

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Optical Design Environment A Desert 1.7 1.8 1.8 2.1 Coast 1.6 1.5 1.4 1.7 Urban 1.4 1.5 1.4 1.9 Farmland 1.5 1.9 2.1 2.2