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:

Concept of Citizenship

Represents the relationship between an individual and a state, characterized by rights and duties, including legal protections, participation in civic life, and allegiance.

Native-born Americans

Individuals born in the United States, including those born to immigrant parents.

Mid 19th Century

A period roughly spanning the 1830s to the 1860s, marked by significant social, economic, and political changes globally, including the Industrial Revolution and American Civil War.

American Gold

Wealth or resources generated from the Americas, often referring to the gold found by European explorers and colonizers during the exploration and colonization period.