A. Convert 4.2 feet to meters. 4.2 feet = 1.28016 meters. The Formula of Scale = Big / Small Scale = 525 meters / 1.28016 meters Scale = 410.1050 meters
b. Convert 4.2 feet to inches. 4.2 feet = 50.4 inches. To get the number of plywood, divide 50.4 inches by 0.6 inch. The answer is 84. So there are 84 plywood sheets.
In this question, three different means of the data are compared. ANOVA is used for comparing between two or more means to test for differences. It extends the z and t test that are only used for comparing two means.
Since three means are compared, the inference procedure to be used is ANOVA.