1-In an independent-measures study, one sample has SS = 16 and a second sample has SS = 24. Both samples have n = 8 scores. What is the value of the pooled variance. 2- An independent-measures t-test produces a result of t = +3.53 with a df = 14. Calculate the PERCENTAGE OF VARIANCE EXPLAINED, or r. You can do it! 3-You have been asked to test a new formula for an energy drink against the old formula. You gather two groups. Group 1 is given the new formula. Group 2 is given the old formula. You ask both groups to rate their energy level on a scale from 0 to 10, with 0 meaning "very tired" and 10 being "very energetic." The descriptive statistics are below. Does the new formula increase energy level ratings? Test at = .05 Group 1 Group 2 New Formula Old Formula n1 = 17 n2 = 15 M1 = 9 M2 = 6 SS1 = 100 SS2 = 150 Calculate the PERCENTAGE OF VARIANCE EXPLAINED, 4- Suppose that the sample mean is M = 60, the population mean is = 50, and the estimated standard error is sM = 5. What is the result of the single-sample t-test