The table above is the output from a multiple regression of the number of pain e

Question

The table above is the output from a multiple regression of the number of pain episodes in 2014 as a function of an individuals age (years) and white blood cell counts (cells/mcL) conducted in Excel. Use the table to answer the following question:

What is the predicted number of pain episodes for an individual who is 81 years of age and has a white blood cell count of 10.4 cells/mcL? Please round your answer to 3 decimal places.

Linear Regression Regression Statistics R 0.5892 R-square 0.34715 Adjusted R-square 0.34496 S 3.28807 N 600 Coefficient Standard Error LCL UCL t Stat p-level H0 (5%) Intercept -0.94571 0.54178 -2.00975 0.11832 -1.74556 0.0814 accepted Age 0.13636 0.00769 0.12125 0.15147 17.72465 0. rejected WBC 0.11105 0.05928 -0.00538 0.22748 1.87311 0.06154 accepted

Explanation / Answer

As from the coefficients from table,

Pain = -0.94571 + 0.13636*Age + 0.11105*WBC

Then for Age = 81, WBC = 10.4, then

Pain = -0.94571 + 0.13636*81 + 0.11105*10.4 = 11.254 [ANSWER]

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