Question 4 There is a claim that the proportion (p) of similarity in assignments submitted by FolCDT students being above the acceptable threshold, as reported by the Turnitin platform, is less than 25%. A sample has been collected and the sample statistics include n = 696 with 30% (p=0.3) being above the acceptable threshold. (a) (i) Explain the meaning of a 95% confidence interval. (ii) Explain the principle behind hypothesis testing. [3 + 3 marks] (b) Determine whether the claim of the report is justified by (i) Constructing a 95% confidence interval, using a critical value of 1.96 and (ii) Doing a hypothesis test at the 5% significance level using a critical value of 1.645. [7 + 7 marks] (Total: 20 Marks)