Develop a confidence interval for µd, the mean of differences d for population of paired data. Suppose that the population of paired differences is normally distributed.
Using the sample paired data below, make a 90% confidence interval for population mean of all differences x - y.
Answer
-0.37 < µd< 1.77
-0.31 < µd< 1.71
-0.07 < µd< 1.47
-0.22 <µd< 7.48