Two Independent Samples of Sizes 30 and 40 Are Randomly $\mu$

question 21

Short Answer

Two independent samples of sizes 30 and 40 are randomly selected from two populations to test the difference between the population means, µ $\mu$ ₂ - µ $\mu$ _1, where the population variances are unknown. Which of the following best describes the sampling distribution of the sample mean difference $\bar { x } _ { 1 } - \bar { x } _ { 2 }$ ? $\begin{array}{|l|l|}\hline \text { A. } & \text { Normal. } \\\hline \text { B. } & t \text {-distributed with } 68 \text { degrees of freedom. } \\\hline \text { C. } & \text { Approximately normal. } \\\hline \text { D. } & \text { None of these choices are correct. } \\\hline\end{array}$

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Definitions:

Adjusting Entry

A journal entry made at the end of an accounting period to allocate income and expenses to the period in which they actually occurred, ensuring the financial statements are in compliance with the accrual basis of accounting.

Payroll

Refers to the total amount of wages, salaries, bonuses, and other compensation paid to employees by a company during a specific period.

Unearned Revenues

Unearned revenues are payments received from customers before the company has provided goods or services, reflected as a liability on the balance sheet.

Adjusting Entry

A journal entry made at the end of an accounting period to allocate income and expenditures to the correct period.