1. Aluminum-lithium alloy is a material used in high strength aerospace applications. The following compressive strengths (in psi) are taken from two aluminum-ithium alloy samples Sample 1: 125, 155, 145, 158, 165, 140 93, 126, 157, 138, 208, 153 Sample 2: Compute the range, arithmetic mean, variance, standard deviation and coefficient of variation of these two data sets (DO NOT USE EXCEL). Report all quantities in the proper units. HAND IN ALL WORK l for downtown Los Angeles over the span of