(7 marks) 5. A user of a certain gauge of steel Wire suspects that the standard deviation of its breaking strength, in newtons (N): is different from the value of 0.75 as specied by the manufac- turer. The user tests the breaking strength of each random sample of ten lengths of Wire and found that its sample variance is 1.65 N. Assume breaking strength to be normally distributed. i. Test at 5% level Of signicance if the breaking strength of the steel wire is different from the manufacturer's specication. (5 marks) ii. Would you change your conclusion in part (i) if the signicance test is reduced to 1%? (1 mark)