The Violent Crime Rate (Number of Violent Crimes Per 100,000

question 30

Essay

The violent crime rate (number of violent crimes per 100,000 residents)is investigated for nine Canadian cities for the years 1990 and 2000 to see if there has been a change.
Is there evidence that the violent crime rate has decreased? Suppose you had mistakenly treated these data as two independent samples instead of matched pairs.What would the significance test have found? Explain why the results are so different.

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Definitions:

Variable Costs

Costs that vary directly with the level of production or service provision.

Fixed Costs

Expenses that do not change with the level of goods or services produced over a short time.

Variable Costs

Expenses that change in proportion to the activity or production level of a business.

Fixed Costs

Expenses that remain constant for a period of time irrespective of the level of outputs, like rent, salaries, and loan payments.