Find the Number of Standard Deviations from the Mean

question 78

Multiple Choice

Find the number of standard deviations from the mean. Round your answer to two decimal places.
-The number of hours per day a college student spends on homework has a mean of 6 hours and a standard deviation of 1.25 hours. Yesterday she spent 3 hours on homework. How many standard deviations from the
Mean is that?

• A) 2.40 standard deviations above the mean
• B) 1.20 standard deviations above the mean
• C) 1.20 standard deviations below the mean
• D) 2.40 standard deviations below the mean

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Definitions:

Operating Profit

The profit earned from a firm's core business operations, excluding deductions of interest and taxes.

Weekly Total Revenue

The total amount of money earned or received by a company, organization, or individual from all sources within a week.

Fixed Costs

Fixed costs are business expenses that remain constant regardless of the level of production or sales, such as rent, salaries, and insurance.

Industry Supply Curve

A graphical representation showing the total quantity of a good or service that businesses in a specific industry are willing and able to supply at various prices.