You have 4 means, and you want to compare each mean to every other mea

You have 4 means, and you want to compare each mean to every other mea

You have 4 means, and you want to compare each mean to every other mean. (a) How many tests total are you going to compute? (b) What would be the chance of making at least one Type I error if the Type I error for each test was . 05 and the tests were independent? (c) Are the tests independent and how does independence/non-independence affect the probability in (b).