The Mean Weight of Trucks Traveling on a Particular Section

question 45

Multiple Choice

The mean weight of trucks traveling on a particular section of I-475 is not known. A state highway inspector needs an estimate of the mean. He selects a random sample of 49 trucks passing the weighing station and finds the mean weight is 15.8 tons. The population standard deviation is 3.8 tons. What is the 95 percent interval for the population mean?

• A) 14.7 and 16.9
• B) 13.2 and 17.6
• C) 10.0 and 20.0
• D) 16.1 and 18.1

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Definitions:

Beta

A measure of a stock's volatility in relation to the overall market, indicating the stock's risk compared to the market average.

Risk-Free Rate

Refers to the return on investment with no risk of financial loss, often estimated by the yield of government bonds.

Market Portfolio

A theoretical bundle of all available assets in the market, representing the entire stock market and used as a benchmark to assess investment performance.

Efficient Frontier

A concept in modern portfolio theory that represents portfolios offering the highest expected return for a given level of risk or the lowest risk for a given level of expected return.