A clinical trial was designed to compare a new drug for lowering cholesterol to a placebo. The 100 subjects who took the new drug had a mean cholesterol of 180.5 with a standard deviation of 23.3. The...

A clinical trial was designed to compare a new drug for lowering cholesterol to a placebo. The 100 subjects who took the new drug had a mean cholesterol of 180.5 with a standard deviation of 23.3. The 100 subjects who took the placebo had a mean cholesterol of 204.1 with a standard deviation of 22.1. Construct a two-sided95% confidence interval for the difference between the two means, assuming equal variance.Give an interpretation of the confidence interval.