Final answer:
The code snippet provided by the student assigns the value 5.5 to the variable x, and if this value were to be displayed, it would just show 5.5 on the screen.
Step-by-step explanation:
The student's question does not directly provide the code needed to determine what will be displayed. However, it seems to involve a variable x being assigned the value of 5.5. Without additional context or code, we can only assume that if the variable x were to be printed to the screen, the output would simply be 5.5. The other information provided that discusses population standard deviation, scientific notation, the quadratic formula, and ranges of values, does not appear to be directly related to the code snippet provided.