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o test the efficacy of a new cholesterol-lowering medication, 10 people are selected at random. Each...

o test the efficacy of a new cholesterol-lowering medication, 10 people are selected at random. Each has their LDL levels measured (shown below as Before), then take the medicine for 10 weeks, and then has their LDL levels measured again (After). Subject12345678910Before111149145116120136136113144133After10414814112012911510879120115 Subject Before After 1 111 104 2 149 148 3 145 141 4 116 120 5 120 129 6 136 115 7 136 108 8 113 79 9 144 120 10 133 115 Give a 97.7% confidence interval for μB−μA μ B − μ A , the difference between LDL levels before and after taking the medication

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Solution: The 97.7% confidence interval for μB−μA , the difference between LDL levels before and after taking the medication is:

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