A study reported in the Journal of the American Medical Association investigated thecardiac demands of heavy snow shoveling. Ten healthy men underwent exercise testingwith a treadmill and a cycle...

A study reported in the Journal of the American Medical Association investigated thecardiac demands of heavy snow shoveling. Ten healthy men underwent exercise testingwith a treadmill and a cycle ergometer modified for arm cranking. The men then clearedtwo tracts of heavy, wet snow by using a lightweight plastic snow shovel and an electricsnow thrower. Each subject’s heart rate, blood pressure, oxygen uptake, and perceivedexertion during snow removal were compared with the values obtained during treadmilland arm-crank ergometer testing. Suppose the following table gives the heart rates inbeats per minute for each of the 10 subjects.Subject Treadmill Arm-Crank Ergometer Snow Shovel Snow Thrower1 177 205 180 982 151 177 164 1203 184 166 167 1114 161 152 173 1225 192 142 179 1516 193 172 205 1587 164 191 156 1178 207 170 160 1239 177 181 175 12710 174 154 191 109At the .05 level of significance, test for any significant differences.