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Exhibit 16-4
In a laboratory experiment, data were gathered on the life span (y in months) of 33 rats, units of daily protein intake (x1) , and whether or not agent x2 (a proposed life extending agent) was added to the rats diet (x2 = 0 if agent x2 was not added, and x2 = 1 if agent was added.) From the results of the experiment, the following regression model was developed. = 36 + 0.8x1 - 1.7x2
Also provided are SSR = 60 and SST = 180.
-Refer to Exhibit 16-4. The life expectancy of a rat that was given 3 units of protein daily, and who took agent x2 is
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