A random sample of monthly gasoline prices was taken from 2011 and from 2015. The samples are

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A random sample of monthly gasoline prices was taken from 2011 and from 2015. The samples are shown. Using α = 0.01, can it be concluded that gasoline cost more in 2015? Use the P-value method.

2.02 2.47 2.50 2.70 3.13 2.56 2011 2015 2.36 2.46 2.63 2.76 3.00 2.85 2.77

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