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a clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. before​ treatment, subjects had a mean wake time of min. after​ treatment, the subjects had a mean wake time of min and a standard deviation of min. assume that the sample values appear to be from a normally distributed population and construct a ​% confidence interval estimate of the mean wake time for a population with drug treatments. what does the result suggest about the mean wake time of min before the​ treatment? does the drug appear to be​ effective?

Respuesta :

This estimate's confidence interval can be used to display the range of values in which the genuine effect is likely to fall. When confidence intervals are small, we can reasonably predict how well a treatment will work; yet, when they are large, the opposite is true.

Are there significant differences between the two confidence intervals' results?

No, as equivalent confidence interval bounds exist.

Which of the following interpretations of a 99% confidence interval, such as 4.1less than muless than 5.6, is correct?

We have 99% confidence that the true value of mu is contained in the range from 4.1 to 5.6.

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