A significant difference in the mean.

Here are heart rates for a sample of 30 students before and after a class break. At a = .05, was there a significant difference in the mean heart rate? (Chart below)
(a) State the hypotheses.
(b) State the decision rule and sketch it.
(c) Find the test statistic.
(d) Make a decision.
(e) Estimate the p-value and interpret it.