A Suburban Realtor Is Studying Commuter Time in the Calgary $\alpha$

question 38

Multiple Choice

A suburban realtor is studying commuter time in the Calgary metropolitan area. She has been told the average weekday travel time from a southern suburb at 8:00 a.m. is 45 minutes. For five months she counts the number of days that it takes her more than 45 minutes to arrive in downtown when she leaves her house at 8:00 a.m. She expects the data are uniformly distributed across the five months. Her sample of observed data yields the following frequencies: 9 days, 15 days, 8 days, 11 days, 12 days. Using $\alpha$ =.01, the critical chi-square value is ___.

• A) 13.277
• B) 15.086
• C) 7.779
• D) 11.070
• E) 2.727

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Definitions:

Divisions

Segments or sections of a larger organization, often treated as separate units for accounting or managerial purposes.

Contribution Margin

The amount remaining from sales revenue after variable expenses are deducted, used to cover fixed costs and generate profit.

Business Segments

Different parts of a company that operate in distinct markets or industries, often reported separately in financial statements.

Common Fixed Expenses

Expenses that do not change with the level of production or sales, such as rent, salaries, and insurance, shared across different parts of a business.