Consider each scenario and decide whether the analysis should use a paired t-test or a two-sample t-test.

Consider each scenario and decide whether the analysis should use a paired t-test or a two-sample t-test. Scenario A: Does listening to upbeat music make people walk faster? 100 volunteers were randomly assigned to listen to either upbeat or relaxing music, and then asked to walk on a track for 20 minutes with headphones. The distance walked was recorded for each person. Scenario B: Two types of sunscreen, Clear and Clean, are tested for effectiveness in blocking both UVA and UVB rays from the sun. Twenty participants use Clear sunscreen on one arm and Clean sunscreen on the other arm, determining randomly the arm for Clear. Researchers measure the redness levels on each arm after one hour of exposure to the sun. Scenario A should use a Big] V test. Scenario B should use a [113%] V test