Studentexam marks(out of 100) and the number of classes theyattendedin the trimester were recorded for a subject.Excel was used to investigate the potential linear relationship between these two variables.A section of the summary output is provided below:

Regression statistics

Multiple R

0.45

R square

0.2025

Observations

88

Coefficients

Standard Error

Intercept

64.11

8.26

Attendance

125

2.38

How many students were sampled?