Question: An article in the Journal of Applied Polymer Science (Vol. 56, pp. 471476, 1995) studied the effect of the mole ratio of sebacic acid on

An article in the Journal of Applied Polymer Science (Vol. 56, pp. 471€“476, 1995) studied the effect of the mole ratio of sebacic acid on the intrinsic viscosity of co-polyesters. The data follow:
(a) Construct a scatter diagram of the data.
(b) Fit a simple linear repression module.
(c) Test for significance of regression. Calculate R2 for the model.
(d) Analyze the residuals and comment on model adequacy.

Mole ratio| 1.0 0.9 0.8 0.7 1.0 0.9 0.6 0.5 0.4 Viscosity |0.45|0.20|0.34|0.58|0.70|0.57|0.55 |0.44

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