PART 2. A research team believes they have developed a treatment that affects IQ. To test this, participants in the Control group receive a placebo (sugar pill) and those in the Test group receive the treatment; below is their output. Group Statistics Std. Error Group N Mean Std. Deviation Mean Score control 15 103.53 2.503 646 test 13 97.23 3.767 1.045 Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Interval of the Mean Sid. Error Difference F Sig. Sig. (2-tailed) Difference Difference Lower Upper Score Equal variances 4.066 .054 5.280 26 .000 6.303 1.194 3.849 8.756 assumed Equal variances not assumed 5.130 20.383 .000 6.303 1.229 3.743 8.862 7. (2pts) State the Null and Alternative Hypotheses: 8. (2pts) The researchers conclude the treatment significantly changed IQ scores. Is this correct, AND, how do you know this? 9. (2pts) According to the output, might any assumptions have been violated? If yes, which one? 10. (4pts) Write-up the results using formal statistical format