An experiment was conducted to study the effects of temperature and type of oven on the life of a particular component. Four types of ovens and 3 temperature levels were used in the experiment. Twenty-four pieces were assigned randomly, two to each combination of treatments, and the following results recorded. Oven Temperature (°F) O1 O2 O3 04 500 227 214 225 260 221 259 236 229 550 187 181 232 246 208 179 198 273 600 174 198 178 206 202 194 213 219 Using a 0.01 level of significance, test the hypothesis that: a. different temperatures have no effect on the life of the component; b. different ovens have no effect on the life of the component; с. the type of oven and temperature do not interact.

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