In order to compare the durability of four different brands of golf balls (ALPHA, BEST, CENTURY, and DIVOT), the National Golf Association randomly selects balls of each brand and places each ball into a machine that exerts the force produced by a 250-yard drive. The number of simulated drives needed to crack or chip each ball is recorded. Use a significance level of 0.05 to conduct all hypothesis tests and construct confidence intervals. Analysis of Variance Sum of Source DF Squares Mean Square F Ratio Prob > F BRAND 3 38504.150 12834.7 21.1742 <.0001 error c. total ordered differences report level difference std err dif lower cl upper p-value divot century alpha best which golf ball brand is most durable o besta paper company manufactures cardboard boxes. the wishes to investigate effects of four production methods on number defective boxes produced in an hour. randomly selects three machine operators and trains each operator thoroughly use all methods. then will produce for one hour using test null hypothesis that population mean same output below answer following questions. a significance conduct tests construct confidence intervals. analysis variance sum source df squares square f ratio prob> F METHOD 3 112.66667 37.5556 79.5294 <.0001 operator on error c. total ordered differences report level difference std err dif lower cl upper method2 method4 method1 method3 which production method should the company select o none of methods differ>