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Name: A study was conducted to investigate whether there are regional differ
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Description: A study was conducted to investigate whether there are regional differences in peanut butter preference in the United States. The country was divided into 7 geographic regions, and in each region, a random sample of peanut butter eaters was asked whe

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A study was conducted to investigate whether there are regional differences in peanut butter preference in the United States. The country was divided into 7 geographic regions, and in each region, a random sample of peanut butter eaters was asked whether they preferred creamy or crunchy peanut butter. The responses were summarized in a 7-by-2 table of counts for each combination of geographic region and creamy or crunchy peanut butter preference.

Which of the following tests is the most appropriate for the investigation?

A two-sample tt-test for a difference between means

A
A two-sample zz-test for a difference between proportions

B
A chi-square test of homogeneity

C
A chi-square test of independence

D
A chi-square goodness-of-fit test

E

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