Graduation Tests Many States Mandate Tests That Have to Be

question 27

Essay

Graduation tests Many states mandate tests that have to be passed in order for the students to graduate with a high school diploma. A local school superintendent believes that after-school tutoring will improve the scores of students in his district on the state's graduation test. A tutor agrees to work with 15 students for a month before the superintendent will approach the school board about implementing an after-school tutoring program. The after-school tutoring program will be implemented if student
scores increase by more than 20 points. The superintendent will test a hypothesis using a =
0.02 .
a. Write appropriate hypotheses (in words and in symbols).
b. In this context, which do you consider to be more serious - a Type I or a Type II error? Explain.
c. After this trial produced inconclusive results, the superintendent decided to test the
after-school tutoring program again with another group of students. Describe two changes he could make in the trial to increase the power of the test, and explain the disadvantages of each.

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Definitions:

Equilibrium Quantity

The amount of a good or service that is supplied and demanded at the equilibrium market price.

Marginal Product

The additional output resulting from the use of one more unit of a factor of production.

Computer Programmers

Professionals skilled in writing and testing the code that enables software applications to function according to user or system design specifications.

Labor Demand Curve

A graphical representation showing the relationship between the quantity of labor demanded by employers and the wage rate.