The Average Cost of Tuition, Room and Board at Community

question 50

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 α = 0.05.
What are the null and alternative hypotheses for this study?

• A) Null: μ ≤ $12,000; alternative: μ > $12,000
• B) Null: μ ≤ $12,000; alternative: μ < $12,000
• C) Null: μ ≤ $11,500; alternative: μ > $11,500
• D) Null: μ ≤ $11,500; alternative: μ < $11,500

---

Definitions:

Validity

The extent to which a test measures what it claims to measure.

Internal Consistency

A measure of reliability assessing the degree to which different test items that propose to measure the same general construct produce similar results.

Item Score

The value or mark assigned to an individual response on a test or assessment.

Total Score

The sum of all individual scores or points in a dataset or assessment.