Answer Happy

An article in IEEE Transactions on Instrumentation and
Measurement (2001, Vol.
50, pp. 2033–2040) reported on a study that had analyzed powdered
mixtures of coal and limestone for
permittivity. The errors in the density measurement was the
response. The data are reported in Table
E12-9.
. TABLE • E12-9 Density Data Density Dielectric Constant Loss Factor 0.749 2.05 0.016 0.798 2.15 0.02 0.849 2.25 0.022 0.877 23 0.023 0.929 2.4 0.026 0.963 2.47 0.028 0.997 2.54 0.031 1.046 2.64 0.034 1.133 2.85 0.039 1.17 2.94 0.042 1.215 3.05 0.045 (a) Fit a multiple linear regression model to these data with the density as the response. (b) Estimate oz and the standard errors of the regression coefficients. (c) Use the model to predict the density when the dielectric constant is 2.5 and the loss factor is 0.03.