In Section 3.10, the same regression slope 𝛾 was used for each of the three types of starch film. If a separate regression slope is used for each type, reanalyze the data by performing a regression...

In Section 3.10, the same regression slope 𝛾 was used for each of the three

types of starch film. If a separate regression slope is used for each type, reanalyze the data by performing a regression analysis with three intercept and

slope terms. Compare the results with those obtained in Section 3.10.