Answer Happy

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Question 2 A company selling a type of oil filter equipment wishes to improve its sales. Eight of the company's salesmen were asked to attend a briefing of the equipment by the manufacturer's representative. The number of sales made by the salesmen the week before and after the briefing is given below: Salesman 1 2 3 4 5 6 7 8 Week before 0 5 2 7 4 5 1 6 No of sales Week after 1 8 2 11 3 8 6 15 Use 1% level of significance to test whether the briefing is useful to salesman? (7 marks)