COMP 233 Probability and Statistics for Computer Science Fall 2015, Assignment 4 Due: Monday, December 7, 2015 Question 1 A colony of laboratory mice consists of several thousand mice. The average weight of all the mice is 32 grams with a standard deviation of 4 grams. A laboratory assistant was asked by a scientist to select 25 mice for an experiment. However, before performing the experiment the scientist decided to weigh the mice as an indicator of whether the assistant's selection constituted a random sample or whether it was made with some unconscious bias (perhaps the mice selected were the ones that were slowest in avoiding the assistant, which migh indicate some inferiority about this group). If the sample mean of the 25 mice was 30.4, the scientist wishes to test the hypothesis that the selection constituted a random sample. a) Test the hypothesis at the significance level of bi Test the hypothesis at the significance level of