Noah is an economist interested in better Here are all the tut understanding whether or not holiday spending throughout the Unit would increase this year compared to last year. To begin his test Noah came up with the null hypothesis that spending would be the same for UNIT 2 TUTORIALS both years and an alternate hypothesis that spending would not be the same. 2.1 Z-Scores and Prob 2.1.1 An Introduction Noah conducted his test and came up with some results. 2.1.2 Identifying Inc 2.1.3 Normal Distrib Which statement indicates a Type I error? 2.1.4 Standard Norn