A random sample of 9 people tried a specific diet that lasted 2 months to lose weight. The weights of these people, meas

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A Random Sample Of 9 People Tried A Specific Diet That Lasted 2 Months To Lose Weight The Weights Of These People Meas 1 (47.82 KiB) Viewed 96 times

A random sample of 9 people tried a specific diet that lasted 2 months to lose weight. The weights of these people, measured in kilograms, were measured both at the beginning and the end of the diet, and are shown in the table below: Weight before diet Weight after diet 75 73 76 72 90 92 92 93 89 63 61 65 62 80 76 92 93 i. Carry out an appropriate hypothesis test to determine whether the diet is effective in helping people lose weight. State the test hypotheses, and specify your test statistic and its distribution under the null hypothesis. Comment on your findings. ii. State any assumptions you made in i. iii. Give a 90% confidence interval for the difference between the means of the weights before and after the diet.