Confidence interval for population mean.
The world's smallest mammal is the bumblebee bat, also known as the Kitti's hog-nosed bat. Such bats are roughly the size of a large bumblebee. Listed below are weights in grams from a sample of these bats. Construct a 95 percent confidence interval estimate of their mean weight. Are the confidence interval limits very different from the limits of 1.56 and 1.87 that are found when assumed that o is known to be 0.30 g?
1.7 , 1.6 , 1.5 , 2.0 , 2.3 , 1.6 , 1.6 , 1.8 , 1.5 , 1.7 , 2.2 , 1.4 , 1.6 , 1.6 , 1.6