The heat capacities of the coals from two different mines are given below. Compare whether there is a difference between the thermal capacities of these two coals at the α=0.05 significance level.

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.