A study of the effects of acid rain on trees in the Hopkins Forest shows that 25 of 100 trees sampled exhibited some sort of damage from acid rain.  This rate seemed to be higher than the 15% quoted in a recent environmetrics article on the average proportion of the damage trees in the Northeast.  Test the appropriate hypothesis at 5% and write your conclusions. Test the following hypothesis Ho:P=0.15 vs Ho:P>0.15. Use alpha = 5%

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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.