The stress scores (predictor variable) and risk of heart attack values (criterion variable) from a small sample of participants are depicted below.

The stress scores (predictor variable) and risk of heart attack values (criterion variable) from a small sample of participants are depicted below.

Stress Score                              Risk of Heart Attack

(Higher values = more stress)    (Higher values = greater risk)

   4                                                    8

     3                                                    4

     1                                                    3

     4                                                    1

What is the risk of heart attack predicted for a person with a stress score of 5?