SHOW ALL THE WORK AND CALCULATION STEP BY STEP PLZ,,1. A research would like to examine the effects of humidity on eating behavior. It is known that laboratory rats normally eat an average of µ = 21 grams of food each day. The research selects a random sample of n = 16 rats and places them in a controlled atmosphere room in which the relative humidity is maintained at 90%. The daily food consumption scores for rats are as follows:,14, 18, 21, 15, 18, 18, 21, 18,16, 20, 17, 19, 20, 17, 17, 19,a. Can the researcher conclude that humidity has a significant effect on eating behavior? Use a two-tail test with ? = .05.,b. Compute the estimated Cohen’s d and r2 to measure the size of the treatment effect.,,,2. On a standardized spatial skills task, normative data reveal that people typically, get µ= 15 correct solutions. A psychologist tests n = 7 individuals who have brain injuries in the right cerebral hemisphere. For the following data, determine whether or not right-hemisphere damage results in significantly reduced performance on the spatial skills task. Test with alpha set at .05 with one tail. The data are as follows:,12, 16, 9, 8, 10, 17, 10,