A regression model is desired relating temperature and the
Chapter , Problem 7.39(choose chapter or problem)
A regression model is desired relating temperature and the proportion of impurities passing through solid helium. Temperature is listed in degrees centigrade. The data are as follows: Temperature (C) Proportion of Impurities 260.5 0.425 255.7 0.224 264.6 0.453 265.0 0.475 270.0 0.705 272.0 0.860 272.5 0.935 272.6 0.961 272.8 0.979 272.9 0.990 (a) Fit a linear regression model. (b) Does it appear that the proportion of impurities passing through helium increases as the temperature approaches 273 degrees centigrade? (c) Find R2. (d) Based on the information above, does the linear model seem appropriate? What additional information would you need to better answer that question?
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