In order to determine whether or not a driver's education course improves the scores on a driving exam, a sample of 6 students were given the exam before and after taking the course. The results are shown below.Let d = Score After - Score Before. 
a.Compute the test statistic.
b.At 95% confidence using the p-value approach, test to see if taking the course actually increased scores on the driving exam.
Definitions:
Orbicularis Oculi
A circular muscle around the eye socket that allows for the closing of the eyes.
Gluteus Maximus
The largest and most superficial of the three gluteal muscles, significantly involved in the movement and stability of the hip and thigh.
Posterior Thigh
The posterior thigh refers to the back part of the thigh, encompassing the muscles, nerves, and tissues located behind the femur, primarily involved in the extension and rotation of the leg.
Semitendinosus
A muscle located in the back of the thigh, part of the hamstring group, involved in knee flexion and hip extension.
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