A clinical trial was conducted to test the effectiveness of the drug zopiclone for treating insomnia in older subjects. Before treatment with zopiclone, 16 subjects had a mean wake time of 102.8 minutes. After treatment with zopiclone, the 16 subjects had a mean wake time of 98.9 minutes and s standard deviation of 42.3 minutes. Assume that the 16 sample values appear to be from a normally distributed population and construct a 98% confidence interval estimate of the mean wake time for a population with zopiclone treatments (n=16, Mean=98.9, Std=42.3). What does the result suggest about the mean wake time of 102.8 minutes before the treatment? Does zopiclone appear to be effective