Question 8 of 8

Question 8 of 8 Researchers in the I.JK designed a study to determine it skin wrinkled from subrnersion in water performed better at handling wet objects' They gathered 20 participants and had each rnoveaset ofwet objectsandasetotdryobjectsbeforeandatter sutrnerging their hands in water for 30 minutes (order of trials was randomized). The response is the time (seconds) it took to move the specific set of objects with wrinkled hands minus the time with unwrinkled hands The mean difference for moving dry objects was 0 85 seconds with a standard deviation of I I .5 seconds. The mean difference for moving wet objects was 15. I seconds with a standard deviation of 13,4 seconds. IKareklas. Nettie, D. and Smulders, TV, 2013 Waterinduced finger wrinkles irnprove handling of wet objects: Biol Lett VOI 9 (2013). (a) Perform the appropriate test to determine if the wrinkled hands were significantly faster than unwrinkled hands at moving dry objects. State the null and alternative hypotheses. Use for in the response area.