Task 8: In Chapter 9 we compared the number of mischievous acts (mischief2) in people who had invisibility cloaks compared to those without (cloak). Imagine we also had information about the baseline number of mischievous acts in these participants (mischief1). Conduct an ANCOVA to see whether people with invisibility cloaks get up to more mischief than those without, when factoring in their baseline level of mischief (Invisibility Baseline.sav).