A calculus instructor uses computer aided instruction and allows students to take the midterm exam as many times as needed until a passing grade is obtained.Following is a record of the number of students in a class of 20 who took the test each number of times.
a.Use the relative frequency approach to construct a probability distribution and show that it satisfies the required condition.
b.Find the expected value of the number of tests taken.
c.Compute the variance.
d.Compute the standard deviation.
Definitions:
Extinction
In psychology, the gradual weakening and eventual disappearance of a conditioned response.
Acquisition
In psychology, acquisition refers to the initial stage of learning or conditioning during which a response is established.
Generalization
The process of formulating general concepts by abstracting common properties of instances.
Counterconditioning
A behavior therapy technique where an unwanted behavior or response is replaced with a more desirable one by associating the unwanted behavior with a new, more positive stimulus.
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