A simple linear regression analysis was conducted to predict the Exam 3 score of students in STA 2023 based on their Exam 1 score.

The analysis yielded the following results:
y-hat = 50.57+0.4845x.

The range of exam scores for both tests was about 30 points to 102 points. Which of the following is the best description of the y-intercept of the line(if appropriate)?

Group of answer choices

When the exam 1 grade increases by 1 point, the exam 3 grade increases by 0.4845.

When the exam 1 grade increases by 1 point, the exam 3 grade increases by 50.57.

The expected Exam 3 score for someone that made a 0 on Exam 1 is a 50.57.

Should not be interpreted.