Exhibit 20

question 63

Multiple Choice

Exhibit 20.1 A researcher is interested in comparing the usage of bank debit cards by consumers in rural (r) and urban (u) areas.Each year for the past five years,she has surveyed 500 individuals (one-half urban,one-half rural) randomly selected from across the United States.She is specifically interested in any differences that may exist between the two groups with regard to usage.The results of the current study indicate that people in urban areas use bank debit cards 12 times per month on average ( ) ,while those in rural areas use bank cards 10 times per month on average ( ) .
Refer to Exhibit 20.1.Which of the following is the null hypothesis that the researcher should use in comparing the usage rates?

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Definitions:

Malingering

Intentionally faking illness to achieve some external gains, such as financial compensation or military deferment.

Financial Compensation

Payment provided to individuals or groups as restitution for loss, injury, or suffering.

Laxatives

Substances that are used to stimulate bowel movements or increase the bulk of feces, often used to treat constipation.

Anticoagulant Medication

Drugs used to prevent blood clot formation or to manage existing clots, reducing the risk of stroke and heart attack.