The Length of Country and Western Songs Is Normally Distributed

question 41

Multiple Choice

The length of country and western songs is normally distributed and has a mean of seconds and a standard deviation of 30 seconds. Find the probability that a random
Selection of 16 songs will have mean length of 181.98 seconds or less. Assume the
Distribution of the lengths of the songs is normal.

• A) 0.14
• B) 0.64
• C) 0.36
• D) 0.86

---

Definitions:

Net Profit Margin

A profitability ratio calculated as net income divided by revenue, indicating how much profit a company makes with its total sales.

Gross Margin

The difference between revenue and cost of goods sold divided by revenue, expressed as a percentage.

Times Interest Earned

A ratio that measures a company's ability to meet its debt obligations, calculated by dividing earnings before interest and taxes by the interest expense.

Debt-To-Equity Ratio

A financial ratio indicating the relative proportion of shareholder's equity and debt used to finance a company's assets.