Suppose the Ages of Students in First-Year Statistics Follow a Skewed-Right

question 48

Multiple Choice

Suppose the ages of students in first-year Statistics follow a skewed-right distribution with a mean of 23 years and a standard deviation of 3 years.If we randomly sampled 100 students,which of the following statements about the sampling distribution of the sample mean age is incorrect?

• A) The mean of the sampling distribution is equal to 23 years.
• B) The standard error of the sampling distribution is equal to 0.3 years.
• C) The shape of the sampling distribution is approximately normal.
• D) The standard deviation of the sampling distribution is equal to 3 years.

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Definitions:

Incremental Cash Flows

The extra cash flow an organization gains by initiating a new project.

Total Cash Flows

The aggregate sum of cash entering and leaving a corporation, which plays a significant role in determining its financial fluidity.

Income Taxes

Taxes levied on both earned income (wages, salaries) and unearned income (dividends, interest), imposed by government authorities.

Sunk Cost

A cost that has already been incurred and cannot be recovered, and should not affect future investment or spending decisions.