12 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 fi ve trials with each product and secures the following results

(in thousands of scrubs):

Test the hypothesis that there are no differences between the means of these products (a 5 .05).

Transcribed Image Text:

Trial One-Koat Competitor A Competitor B 1 37 34 24 234 30 19 25 34 22 23 28 31 20 5 29 27 20