What are the blocks in this experiment

Reference no: EM131028792

Three skin cleansing agents were used on three persons. For each person, three patches of skin were exposed to a contaminant and afterward cleansed by using one of the three cleansing agents. After 8 hours, the residual contaminant was measured, with the following results:

SST = 1.18, SSB = .78, SSE = 2.24.

a What are the experimental units, and what are the blocks in this experiment?

b Test the hypothesis that there are no differences among the treatment means, using α=.05.

Reference no: EM131028792

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