The Mean Length of Time, Per Week, That Students at a Certain

question 17

Multiple Choice

The mean length of time, per week, that students at a certain school spend on their homework is 24.3 hours, with a standard deviation of 1.4 hours. Assuming the distribution of study times is normal, what percent of students study between 22.9 and 25.7 hours?

• A) 99.7%
• B) 95%
• C) 68%
• D) 50%

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Definitions:

Output Tax

A tax levied on the production or output of goods and services, often implemented to regulate or diminish the production of certain products.

Cost And Supply Curves

Graphical representations that show how the cost of producing a good and the quantity supplied vary with quantity produced.

Constant-Cost Industry

An industry in which the costs of production do not change as the industry's output changes.

Increasing-Cost Industry

An industry in which the costs of production increase as output expands, often due to factors like resource depletion or higher input prices.