Question: 11.74 With reference to Example 15, (a) find the least squares line for predicting the chromium in the effluent from that in the influent after

11.74 With reference to Example 15,

(a) find the least squares line for predicting the chromium in the effluent from that in the influent after taking natural logarithms of each variable;

(b) predict the mean ln (effluent) when the influent has 500 μg/l chromium.

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