A manufacturer claims that at least 40% of its customers use coupons. A study of 25 customers is undertaken to test that claim. The results of the study follow. 
At a .05 level of significance, use Excel to test the manufacturer's claim.
Definitions:
Sociological Research
The process of investigating and analyzing aspects of social life to understand patterns, relationships, and social structures.
Valid Source
Refers to information or reference material that is credible, reliable, and accurately supports research or factual claims.
Literature Review
A comprehensive survey of scholarly articles, books, and other sources relevant to a particular topic or area of research, designed to provide a critical evaluation of the work in the context of existing literature.
Primary Data
Data collected firsthand by a researcher for a specific research purpose, through experiments, surveys, or observations.
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