d) [8.5 marks] Your prior experience suggests that people don't engage with email advertisements and often just send these emails to spam. Test whether VogueVilla's email marketing campaign achieves an engagement rate greater than 50%. Use the critical value approach at a 5% significance level. Include all the steps of hypothesis testing (hypotheses, decision rule, critical value, and conclusion with justification). Show your manual calculations and provide a StatCrunch output confirming your r