A Retailer Claims That 90% of Its Customers Are "Pleased

question 31

Multiple Choice

A retailer claims that 90% of its customers are "pleased" or "very pleased" with the customer service. In a survey of 300 customers taken last week, what is the probability that 84% or more will be "pleased" or "very pleased" with the service?

• A) 0.1736
• B) 0.5736
• C) 0.3464
• D) Almost 100%
• E) Almost no chance

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Definitions:

Marginal Utility

The additional satisfaction or benefit (utility) that a consumer derives from buying an additional unit of a commodity or service.

Iced Tea

A chilled form of tea, often sweetened and served with ice, popular as a refreshing beverage.

Budget Constraint

The limitations on the consumption bundles that a consumer can afford given their income and the prices of goods.

Consumption Possibilities

The set of all consumption bundles that can be consumed given a consumer’s income and prevailing prices.