SCENARIO 11-8An impоrtаnt fаctоr in selecting dаtabase sоftware is the time required for a user to learn how to use the system. To evaluate three potential brands (A, B and C) of database software, a company designed a test involving five different employees. To reduce variability due to differences among employees, each of the five employees is trained on each of the three different brands. The amount of time (in hours) needed to learn each of the three different brands is given in the excel sheet named "Software" shown below. Software A Software B Software C Operator 1 17 17 23 Operator 2 18 17 23 Operator 3 14 13 19 Operator 4 12 11 18 Operator 5 19 17 22 Referring to Scenario 11-8, the null hypothesis for the randomized block F test for the difference in the block means is
SCENARIO 11-8An impоrtаnt fаctоr in selecting dаtabase sоftware is the time required for a user to learn how to use the system. To evaluate three potential brands (A, B and C) of database software, a company designed a test involving five different employees. To reduce variability due to differences among employees, each of the five employees is trained on each of the three different brands. The amount of time (in hours) needed to learn each of the three different brands is given in the excel sheet named "Software" shown below. Software A Software B Software C Operator 1 17 17 23 Operator 2 18 17 23 Operator 3 14 13 19 Operator 4 12 11 18 Operator 5 19 17 22 What is the first step in R in order to perform the randomized block F test?