The potential of using solar panels constructed above national highways to generate energy was explored in the International Journal of Energy and Environmental Engineering (December 2013). Two-layer solar panels (with 1 meter separating the panels) were constructed above sections of both east-west and north-south highways in India. The amount of energy (kilowatt-hours) supplied to the country’s grid by the solar panels above the two types of highways was determined each month. The data for several randomly selected months are provided in the table. The researchers concluded that the “two-layer solar panel energy generation is more viable for the north-south oriented highways as compared to east-west oriented roadways.” Compare the mean solar energy amounts generated for the two types of highways using a 95% confidence interval. Does the interval support the researchers’ conclusion?

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Month February April July September October East-West 8658 7930 5120 6862 8608 North-South 8921 8317 5274 7148 8936