The potential of solar panels on roofs built above national highways as a source of solar energy was investigated in the International Journal of Energy and Environmental Engineering

(December, 2013). Computer simulation was used to estimate the monthly solar energy (kilowatt-hours) generated from solar panels installed across a 200-kilometer stretch of highway in India. Each month, the simulation was run under each of four conditions: single-layer solar panels, double-layer solar panels 1 meter apart, double-layer solar panels 2 meters apart, and double-layer solar panels 3 meters apart. The data for 12 months are shown in the table.

To compare the mean solar energy values generated by the four panel configurations, a randomized block design ANOVA was conducted. A Minitab printout of the analysis is provided.

a. Identify the dependent variable, treatments, and blocks for this experiment.
b. What null hypothesis would you test to compare the mean solar energy values generated by the four panel configurations?
c. Carry out the test, part b. Give the F-value and associated p-value.
d. What conclusion can you draw from the analysis?

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Double Layer Single Layer Month 1-meter 2-meters 3-meters 8,608 8,264 8,297 October 7,051 6,724 6,883 10,008 9,238 9,144 10,239 9,334 9,808 November December Analysin of Variance for Energy Dr Source MS Condition Month 49730750 16576917 115.54 0.000 90618107 8238010 4734730 57.42 0.000 11 33 47 145083587 143477 Erzor Total s = 378.783 R-Sq = 96.74 R-sq(adj) = 95.35+ %3!