Question: #1) The null and alternative hypotheses are:

H o : µ d = 0

H 1 : µ d ≠ 0

The following paired observations show the number of traffic citations given for speeding by officer Thibodeaux and Officer Fontenot for Lafayette Parish in the last 5 months.

May June July Aug Sep

Officer Thibodeaux 30 22 25 19 26

Officer Fontenot 26 19 20 15 19

At the 5% significance level, is there a difference in the mean number of citations given by the two officers? (Identify all components of the 6-step hypothesis testing procedure.)