## Question

###### Point) To test the efficacy of a new cholesterol-lowering medication; I0 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) . Subject Before( B) After( A) 192 186 164 143 164 134 134 99 189 185 118 107 138 123 184 189 155 121 10 127 122Let D = B -A Find the 80% confidence interval for the average difterence botween LDL levels before and after taking the medicatlon_Kp

point) To test the efficacy of a new cholesterol-lowering medication; I0 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) . Subject Before( B) After( A) 192 186 164 143 164 134 134 99 189 185 118 107 138 123 184 189 155 121 10 127 122 Let D = B -A Find the 80% confidence interval for the average difterence botween LDL levels before and after taking the medicatlon_ Kp

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