Question
4) A test that Species is not needed in the model, given that Thickness is in the model, can be conducted as a joint test
4) A test that Species is not needed in the model, given that Thickness is in the model, can be conducted as a joint test that two model parameters are both equal to 0. For this test, specify the model equation and the appropriate null and alternative hypotheses. Obtain the value of the F test statistic and state the degrees of freedom associated with the F test statistic.
5) The p-value for the value of the F test statistic that you should have calculated in question 4 is 0.38 (there is no way for you to verify this without a computer). What does this p- value allow us to conclude regarding the hypothesis test in question 4?
6) Someone claims that starch films made from potatoes are stronger than those made from corn. Is this a reasonable claim?
7) If a simple linear regression analysis had been performed only on the potato data, what would the estimated regression equation be?
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