A Department Store Claims That Its Average Customer Satisfaction Rating

question 22

Multiple Choice

A department store claims that its average customer satisfaction rating is 28.5.We believe that this rating is too high, so we randomly sample 40 customers and find a sample average of 25.2.If the standard deviation of customer satisfaction for this store is 13.1, what is the probability of observing a sample at least this far below the claimed mean, assuming the claim is true?

• A) 0.9441
• B) 0.4013
• C) 0.0559
• D) 0.2500

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Definitions:

Foreign Exchange Rates

The value of one currency for the purpose of conversion to another, determining how much of one currency can be exchanged for another, influenced by market conditions, economic factors, and government policies.

Currency

A system of money in general use in a particular country or region, facilitating trade and economic transactions.

Second Currency

An alternate form of currency, sometimes unofficial or digital, used alongside a primary currency within an economy.

Balance Of Payments

A comprehensive record of all economic transactions between the residents of a country and the rest of the world within a specific time period.