A popular theory is that presidential candidates have an advantage if they are taller than their main opponents. Listed are heights(in centimeters) of randomly selected presidents along with the heights of their main opponents. Complete parts(a) and(b) below.

Height (cm) of President Height (cm) of Main Opponent

191 167

171 180

176 172

190 177

185 183

177 170

A. Identify test statistic

B. p value