Medical Association  is interested in determining the impact of a new drug on the cholesterol levels . Data was collected from 11 women diagnosed with high cholesterol. The data below shows the cholesterol levels before and after the drug was administered.    Cholesterol Levels in mg/dL  Before  227   289  257  228   303  275   262   290   244  233 179 After    134   240  230  186   265   242   242   281   240  212 215   a. Calculate a 95% confidence interval for the mean cholestoral level  (i) before drug and (ii) after drug .  b. Test the hypothesis that the average cholesterol levels before and after administering the pill are equal for both mechanics are equal. Use the 1% level of significance

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A Medical Association  is interested in determining the impact of a new drug on the cholesterol levels . Data was collected from 11 women diagnosed with high cholesterol. The data below shows the cholesterol levels before and after the drug was administered.  


 Cholesterol Levels in mg/dL

 Before  227   289  257  228   303  275   262   290   244  233 179

After    134   240  230  186   265   242   242   281   240  212 215 


 a. Calculate a 95% confidence interval for the mean cholestoral level  (i) before drug and (ii) after drug

.  b. Test the hypothesis that the average cholesterol levels before and after administering the pill are equal for both mechanics are equal. Use the 1% level of significance. 

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