2. In an investigation to compare the accuracy of Crackshot and Fastfire shotguns in clay shooting, eight competitors each fired shots with each make of gun. Their scores are shown in the table below...

2. In an investigation to compare the accuracy of Crackshot and Fastfire shotguns in clay shooting, eight competitors each fired shots with each make of gun. Their scores are shown in the table below Competitor A B C D E F G H Crackshot 93 99 90 86 85 94 87 91 Fastfire 87 91 86 87 78 95 89 84 i. Calculate a 95% confidence interval for the mean accuracy of the shotguns. [5 marks] ii. Comment on the hypothesis that the two mean accuracies for the two groups are equal. Use the 5% level of significance. [6 marks] iii. Would your conlcusion change at the 10% level of significance?