a. Calculate the t-statistic. 1:). Determine whether to reject the null hypothesis. If the calculated t-statistic is larger than the critical t-statistic (from Appendix C, Table D1, reject the null hypothesis & accept the alternative hypothesis. It not. accept the null hypothesis and reject the alternative hypothesis. Which is the correct decision (circle one)? - Accept the null hypothesis: The means are essentially equivalent. There is E a statistically significant difference between the two groups. We should reject the alternative hypothesis. I Reject the null hypothesis: the means are different enough that they should be thought of as statistically significant. We should accept the alternative hypothesis. INDEPENDENTSAMPLES T-TEST INSTRUCTIONS: This example is from page 213 (data comes from Table 10.5 on page 212). Follow along and copy down the work for computing an independent-samples t-test. 7. Obtain Mean & Standard Deviation: You'll need the mean (nd, :32) and standard deviation (1and,1 ) for each group. Calculate them if they are not already provided; however, for the test, they will be provided. I 21: I 5'1: I 22: I 5'2: 8. Calculate the Effect Size. a. First, calculate the pooled standard deviation, represented using the symbol EP. b. Second, calculate effect size (d)