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11.4 Exercise 30

Avg difficulty 2.5

A major food manufacturer is concerned that the sales for its skinny french fries have been decreasing. As a part of a feasibility study, the company conducts research into the types of fries sold across the country to determine if the type of fries sold is independent of the area of the country. The results of the study are shown in the table. Conduct a test of independence.

Type of Fries Northeast South Central West
Skinny fries 70 50 20 25
Curly fries 100 60 15 30
Steak fries 20 40 10 10

OpenStax Introductory Business Statistics 2e, 11.4 Test of Independence, exercise 30

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Adapted from Introductory Business Statistics 2e © 2023 Rice University. Licensed under CC BY 4.0. Source: Introductory Business Statistics 2e. Imported at revision 50ec917.