At a Certain University, the Average Cost of Books Was

question 24

Multiple Choice

At a certain university, the average cost of books was $320 per student last semester and the population standard deviation was $85. This semester a sample of 55 students revealed an average cost of books of $355 per student. The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis?

• A) 0.41
• B) 0.64
• C) 3.05
• D) 22.65

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Definitions:

Industrialized

The process of developing industries in a country or region on a wide scale.

Rich Democracies

Countries characterized by high levels of economic development, wealth, and democratic governance.

Organ Reserve

The capacity of organs to allow the body to cope with stress, via extra, unused functioning ability.

Homeostasis

The adjustment of all of the body’s systems to keep physiological functions in a state of equilibrium. As the body ages, it takes longer for these homeostatic adjustments to occur, so it becomes harder for older bodies to adapt to stress.