Question 2

The goal in this analysis is to perform the strongest suitable test of whether the

precipitation amount differs between October and November.

2.a.

(10 points)

Please generate visualizations to address whether the differences between the

precipitation in October the following November in "dat.trim" are consistent with being

i.i.d. samples from a Normal (uo 2) distribution. Please address independence and

Normality.

2.b.

(5 points)

Please perform the strongest test of the null hypothesis that the difference in precipitation

between October and November has mean equal to 0.