# Answer on Statistics and Probability Question for seongmin

Question #44740

To 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).

Subject Before After

1 132 114

2 174 175

3 147 140

4 179 152

5 122 100

6 192 158

7 125 98

8 119 93

9 200 191

10 173 139

Give a 93.1% confidence interval for μB−μA, the difference between LDL levels before and after taking the medication.

Confidence Interval =

at 93.1% confidence.

Give your answer as an open interval, in the form (A,B) where A is the lower bound and B is the upper bound.

Subject Before After

1 132 114

2 174 175

3 147 140

4 179 152

5 122 100

6 192 158

7 125 98

8 119 93

9 200 191

10 173 139

Give a 93.1% confidence interval for μB−μA, the difference between LDL levels before and after taking the medication.

Confidence Interval =

at 93.1% confidence.

Give your answer as an open interval, in the form (A,B) where A is the lower bound and B is the upper bound.

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