##### Question

In: Statistics and Probability

# Construct a confidence interval for ?? the mean of the differences d for the population of...

Construct a confidence interval for ?? the mean of the differences d for the population of paired data. Assume that the population of paired differences is normally distributed. The table shows the weights of 9 subjects before and after following a particular diet for two months. Construct a 99% confidence interval for the mean difference of the “before” minus “after” weights. Round to one decimal place.

 Subject A B C D E F G H I Before 168 180 157 132 202 124 190 210 171 After 162 178 145 125 171 126 180 195 163

## Solutions

##### Expert Solution

Find sample size, mean and standard deviation from both before and after data: Formula Ref: 99% Confidence interval mean difference:

a 99% confidence interval for the mean difference of the “before” minus “after” weights are (-27.1, 46.9) ## Related Solutions

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