Assume That a Simple Random Sample Has Been Selected from a Normally

question 59

Essay

Assume that a simple random sample has been selected from a normally distributed population. Find the test statistic, P-value, critical value(s), and state the final conclusion.
-Test the claim that for the adult population of one town, the mean annual salary is given by $\mu = \$ 30,000$ . Sample data are summarized as $\mathrm { n } = 17 , \overline { \mathrm { x } } = \$ 22,298$ , and $\mathrm { s } = \$ 14,200$ . Use a significance level of $\alpha = 0.05$ .

---

Definitions:

Criterion-related Validity

The extent to which a measure is related to an outcome or criterion, indicating how well the test predicts a specific aspect of a person's behavior or performance.

Mechanical Aptitude

Mechanical aptitude refers to a person's ability to understand and apply mechanical concepts and principles, often assessed for careers involving machinery or engineering tasks.

Criterion-related Validity

The extent to which a measure is associated with an external criterion or outcome, assessing the test's predictive or concurrent accuracy.

Content Validity

The extent to which a test measures all aspects of the concept it intends to measure.