In Telephone Interviews with a Random Sample of 1,100 Online

question 10

Multiple Choice

In telephone interviews with a random sample of 1,100 online shoppers, shoppers said they expected to spend an average of $976 for online purchases this year.Using a sample standard deviation of $180, you build a 95% confidence interval estimate of the average spending for the population of online shoppers represented by the sample and determine the margin of error for your 95% interval.Now suppose you want to reduce the margin of error in your interval by 20% without sacrificing the 95% confidence level.How big a sample would be required?

• A)1096
• B)1718
• C)1461
• D)1528
• E)1637

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Definitions:

Attitude Questionnaires

Surveys or questionnaires designed to measure and assess an individual's attitudes, beliefs, and opinions on various topics.

Momentary Influences

Short-term factors or situations that can temporarily affect individuals' thoughts, feelings, or behaviors.

Cognitive Dissonance

A psychological phenomenon where an individual experiences discomfort due to holding contradictory beliefs or ideas simultaneously.

Attitudes

A psychological tendency expressed by evaluating a particular entity with some degree of favor or disfavor, influenced by personal experience and social context.