An orchard owner is testing the effectiveness of an insecticidal spray for improving yield of their
apple trees by more than 50 pounds. They randomly pick 12 pairs of adjacent trees throughout
their orchard and apply the spray at the beginning of spring to one tree from each pair, then
measures their yields throughout the season in pounds. Their data is as follows:

Be sure to
a) state hypotheses
b) calculate a test statistic
c) calculate p-value
d) reach conclusions using a 10% significance level, and interpret in context.