Three brands of running shoes are each tested by 10 different runners. The amount of wear on the sole of the shoes is then measured. The objective is to determine if there is any difference among the three brands of shoes based on how long the soles last. This means that there is one factor with 10 levels and 3 blocks.

Question

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The scenario describes a situation with three treatments (brands of shoes) and 10 blocks (runners), not one factor with 10 levels and 3 blocks. The objective is to compare the three brands, making the brands the factor with three levels, and the different runners serve as blocks to control for variability among individuals.

Three Brands of Running Shoes Are Each Tested by 10