Exhibit 9-6 A Random Sample of 16 Students Selected from the Student

question 86

Multiple Choice

Exhibit 9-6
A random sample of 16 students selected from the student body of a large university had an average age of 25 years and a standard deviation of 2 years. We want to determine if the average age of all the students at the university is significantly more than 24. Assume the distribution of the population of ages is normal.
-Refer to Exhibit 9-6. The p-value is between

• A).005 to .01
• B).01 to .025
• C).025 to .05
• D).05 to .10

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Definitions:

Marginal Tax Rate

The rate at which the last dollar of a taxpayer’s income is taxed, indicating the percentage of tax applied to your income for each tax bracket in which you qualify.

Regressive Tax

A tax applied uniformly, taking a larger percentage of income from low-income earners than from high-income earners, considered to be inversely proportional to the taxpayer's ability to pay.

Average Tax Rate

The proportion of total income that an individual or business pays in taxes, calculated by dividing the total tax paid by the taxable income.

Progressive Tax

A tax system in which the tax rate increases as the taxable amount increases, usually aimed at ensuring fairness by taxing higher incomes at higher rates.