An accountant wishes to estimate the mean of accounts receivable. He takes a random sample of 10 accounts receivable and gets the following results in millions of shillings. 6,7,4,2,5,7,8,6,9,9,7,0,7,3,8,1,6,8,5,2. Required: Construct a 95% confidence interval of the true mean of accounts receivable. (Assume the accounts are normally distributed). (10 marks)