A collection of paired data consists of the number of years that students have studied Spanish and their scores on a Spanish language proficiency test. A computer program
was used to obtain the least squares linear regression line and the computer output is
shown below. Along with the paired sample data, the program was also given an x value
of 2 (years of study) to be used for predicting test score.
Equation: y = mx + b
Statistics:
r2 = 0.83
r=0.91
Parameters:
. m- 10.90
. b = 31.55
Answer the following questions based on the information given above.
A student is predicted to earn a test score of 76. Which of the following values best represents
the number of years that he or she has studied Spanish? Assume that there is a significant
linear correlation between years of study and test score.
4.1 years
3.4 years
2.9 years
2.1 years