The Length of Country and Western Songs Is Normally Distributed

question 43

Multiple Choice

The length of country and western songs is normally distributed and has a mean of 200 seconds and a standard deviation of 40 seconds. Find the probability that a random selection of 16 songs will have mean length of 186.30 seconds or less. Assume the distribution of the lengths of the songs is normal.

• A) 0.91
• B) 0.41
• C) 0.09
• D) 0.59

---

Definitions:

Real GDP

The measurement of a country's economic output adjusted for price changes (inflation or deflation), reflecting the true value of all goods and services produced.

Money Supply Curve

A graphical representation showing the relationship between the quantity of money in an economy and the level of interest rates.

Equilibrium Interest Rate

The interest rate at which the supply of funds (savings) equals the demand for funds (loans), resulting in market equilibrium.

Quantity of Money

The total amount of money in circulation or in existence within a specific economy.