Using the same significance test with P-values in the previous problem, Ozcan Example 2.10 Figure 2.17 shows a multiple regression Excel solution with two predictor (or independent) variables: Medication Errors and Case-mix index. The F-test P-value, 0.0256 is less than 5% so the regression equation, Patient Falls = 1.09614 + 0.1546 (Medication Errors) + 11.21089 (Case-mix index) has passed the F test. Next we have to do t-test on each predictor variable.

Medication Errors' P-value, 0.042832 is less than 5%, but Case-mix index's P-value, 0.064725 is greater than 5%.

This means we must rerun Excel Regression with Medication Errors only to predict Patient Falls. Therefore, the predicted Patient Falls of 21 falls with 20 Medication Errors and 1.5 Case-mix index should not be used or used with caution.

Question: True or False?