confidence interval estimate of the mean weight change for the population.

Here is a sample of amounts of weight change (kg) of college students in their freshman year: 11, 3, -1, -7, where - 7 represents a loss of 7 kg and positive values represent weight gained. Here are ten bootstrap samples: {11, 11, 11, - 1), {11, -7, - 1, 11}, (11, - 7, 3, -1}, {3, -7, - 1, 11), {-1, -1. -1, 3), (3, -7, 3, -7), {11, 3, -7, -1). {-7, 3, - 7, 3), (-7, -1, -7, 3), (3, 11, 11, 11). 3 Complete parts (a) and (b) below. a. Using only the ten given bootstrap samples, construct an 80% confidence interval estimate of the mean weight change for the population. kg