T-test Assignment 1. A researcher is interested in the effects of cardio exercise on memory. Half of the participants jog on the treadmill for 15 minutes while the other half sits quietly. At the end of the 15 minutes, participants are shown a list of 20 words and then asked to write down as many as they can remember (memory). a. Write a directional hypothesis: b. Write a non-directional hypothesis: c. What type of specific t-test do you have to conduct to test your hypothesis