One Koat Paint Company has developed a new type of porch
One-Koat Paint Company has developed a new type of porch paint that it hopes will be the most durable on the market. The R & D group tests the new product against the two leading competing products by using a machine that scrubs until it wears through the coating. One-Koat runs five trials with each products and secures the following results (in thousands of scrubs):


Test the hypothesis that there are no differences between the means of these products (α =.05).
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