Question

A professor determined the relationship between the time spent studying (in hours) and performance on an exam.

Performance = 70.443 + 4.885 * (time)

Ann studied 2.6 hours for the last exam. However there was a concert in town the night before and her score was 16 points lower than expected. What was her score on this exam, rounded to the nearest integer?

Answer 1

A professor determined the relationship between the time spent studying (in hours) and performance on an exam.
Performance = 70.443 + 4.885 * (time)
Ann studied 2.6 hours for the last exam.
Performance = 70.443 + 4.885 * (2.6)Performance = 83.144 the expected points
However there was a concert in town the night before and her score was 16 points lower than expected
actual performance = 83.144 - 16 = 67.144