Question Three [Total Marks: 19] a) A manufacturer of apple phone charges claims that only 4% of his production is defective. In a random sample of 120 items, the defect rate is 4.99%. At the 1% level of significance, test the manager's claim. i. State the null and altemative hypotheses for the test. [2] ii. Calculate the value of the test statistic for this test. [2]