A drug is suspected to have as a side effect a slowing down of the reaction time as result. To investigate, 10 test persons are divided into two...

A drug is suspected to have as a side effect a slowing down of the reaction time as result. To investigate, 10 test persons are divided into two groups, of which only one receives the drug. The reaction times are then measured and displayed in a stem-leaf diagram.

Compare the average reaction times of the two groups