A drug company would like to test the effectiveness of a new cholesterol medicat

Question

A drug company would like to test the effectiveness of a new cholesterol medication. To test the effectiveness, the LDL cholesterol level of 8 randomly selected individuals was measured before and after they took the medication. The data are shown below: 5. Before After erson 185 122 200 184 188 219 210 184 176 146 110 104 126 135 115 132 using -001, perform a hypothesis test to determine if the average LDL level is more than 50 points lower for patients who have taken the new medication a) b) Construct a 99% confidence interval to estimate the average difference in LDL levels for people before and after they take the medication.

Explanation / Answer

As p-value is less than the significance level of 0.01, we reject the null hypothesis

This means there are significant evidence to conclude that the didfference is more than 50 points.

b)

Before After dbar 185 122 63 200 146 54 184 110 74 188 104 84 219 126 93 210 135 75 184 115 69 176 132 44 Mean 69.5

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