The Average Cost of Tuition, Room and Board at Community $\alpha$

question 12

Multiple Choice

The average cost of tuition, room and board at community colleges is reported to be $11,500 per year, but a financial administrator believes that the average cost is higher. A study conducted using 150 community colleges showed that the average cost per year is $12,000 with a standard deviation of $1,200. Let $\alpha$ = 0.05. What are the null and alternative hypotheses for this study?

• A) Null: \(\mu\) \(\le\) $12,000; alternative: \(\mu\) > $12,000
• B) Null: \(\mu\) \(\le\) $12,000; alternative: \(\mu\) < $12,000
• C) Null: \(\mu\) \(\le\) $11,500; alternative: \(\mu\) > $11,500
• D) Null: \(\mu\) \(\le\) $11,500; alternative: \(\mu\) < $11,500

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Definitions:

Gross Errors

Significant mistakes or inaccuracies that can drastically affect the outcome of a task or experiment, usually due to negligence or oversight.

Validity

The extent to which a test, measure, or research study accurately reflects or assesses the specific concept that it is intended to measure.

Recruitment

The process of finding, attracting, and selecting suitable candidates for employment to fill job vacancies within an organization.

Selection

The process of choosing the most suitable candidates for a position or task from a pool of applicants.