Use the relatively small number of given bootstrap samples to construct
the confidence interval. Here is a sample of amounts of weight change (kg) of college students in
their fres hman year : 11, 3, 0, -2, where
-2 represents a loss of 2 kg and positive values represent weight gained. Here are ten bootstrap samples: {11, 11, 11, 0}, { 11, -2, 0, 11}, { 11 , -2, 3, 0}, {3, -2, 0, 11 }, {0, 0, 0, 3 },
{ 3, -2, 3, -2}, { 11, 3, -2, 0}, { -2, 3, -2, 3}, { -2, 0, -2, 3}, { 3, 11, 11 , 11} . Using only the ten given bootstrap samples, construct an 80% confidence interval estimate
of the mean weight change for the population.