A study of the effects of acid rain on trees in the Hopkins Forest shows that of 100 trees sampled, 25 of them exhibited some sort of damage from acid rain. Test at the 5% level of significance to determine if this rate is higher than the 15% quoted in a recent Environmetrics article on the average proportion of damaged trees in the Northeast.
a. State the null and alternate hypothesis using correct symbolization.
b. Include a copy of the Minitab Printout for this test.
c. Give the p-value.
d. Based on the p-value, does this sample suggest that trees in Hopkins Forest are more susceptible than the rest of the region?