At a Recent Meeting,the Manager of a National Call Center

question 27

Multiple Choice

At a recent meeting,the manager of a national call center for a major Internet bank made the statement that the average past-due amount for customers who have been called previously about their bills is now no larger than $20.00.Other bank managers at the meeting suggested that this statement may be in error and that it might be worthwhile to conduct a test to see if there is statistical support for the call center manager's statement.The file called Bank Call Center contains data for a random sample of 67 customers from the call center population.Assuming that the population standard deviation for past due amounts is known to be $60.00,what should be concluded based on the sample data? Test using α = 0.10.

• A)Because p-value = 0.4121 > alpha = 0.10,we do not reject the null hypothesis.
• The sample data do not provide sufficient evidence to reject the call center manager's statement that the mean past due amount is $20.00 or less.
• B)Because p-value = 0.4121 > alpha = 0.10,we reject the null hypothesis.
• The sample data provide sufficient evidence to reject the call center manager's statement that the mean past due amount is $20.00 or less.
• C)Because p-value = 0.2546 > alpha = 0.10,we do not reject the null hypothesis.
• The sample data do not provide sufficient evidence to reject the call center manager's statement that the mean past due amount is $20.00 or less.
• D)Because p-value = 0.2546 > alpha = 0.10,we reject the null hypothesis.

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Definitions:

Diffusion Of Responsibility

A sociopsychological phenomenon where individuals are less likely to take action or feel a sense of responsibility in the presence of a large group of people.

Likert Scale

A psychometric scale commonly used in questionnaires to gauge attitudes, values, or responses, where participants specify their level of agreement to a statement.

Personal Attribution

A psychological concept referring to how individuals explain causes of behavior and events, often attributing them to personal characteristics rather than external circumstances.

Situational Attribution

The process of inferring that external circumstances, rather than internal character traits, are responsible for an individual's behavior in a given situation.