# STAT372 Lecture Notes - Lecture 8: Kilowatt Hour, Lagrange Multiplier, Linear Combination

## Document Summary

Design treatment each is no once in each block. Variance we use this when wish to compare more than two groups . also assume that the underlying variances for each group are equal . an extension of the two sample , independent samples , equal variance case. Chapter 1 , we looked at examples where t. : compare 5 different designs of a. Hours delivered by new the type of battery . battery under certain test conditions . Hours the larger the battery lasts . different designs lo batteries in each design , Does power 9 with designcost: which design is best. # of treatments the treatment two has n j= 1. 2 sr. of observations in each treatment. J ; represents the ith treatment effect . We need to estimate our model parameters . We will use least squares and a lagrange multiplier to deal with the constraint.