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Consider the following data:
a. Construct a scatter plot of the data. Determine the order of the polynomial that is represented by this data.
b. Obtain an estimate of the model identified in part a.
c. Conduct a test of hypothesis to determine if a third-order, as opposed to a first-order, polynomial is a better representation of the relationship between y and x. Use a significance level of 0.05 and the p -value approach. |
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