Hypothesis

Demographic Research

Team Alpha

University of Phoenix

RES/342

Dr. Edward S. Balian

November 16, 2011

Data Set Used: CIA Global Demographics Set

The average age for human life had been fairly constant for most of human history; however, over the past century human longevity has nearly doubled. The United States had improved nutrition and the control of infectious diseases early in the 20th century (The Future, 2006). Although other countries have adapted western technologies, does the United States of America have the highest life expectancy?

Formulate both a numerical and verbal hypothesis statement regarding your research issue.

Is the life expectancy in the United States of America higher than any other country? The average life expectancy is 77.26 years of age. The numerical hypothesis: The average life expectancy in the United States of 77.26 years is greater than the 61 countries sampled. The verbal hypothesis: The average life expectancy in the United States of America of 77.26 years is greater than the average life expectancy in other countries. A numerical hypothesis allows the experimenter to express an educated guess through the use of numbers. Less ambiguity exists with numerical hypotheses; the experimenter can compare numerical results directly to the hypothesis. A verbal hypothesis simply states the testable question. By formulating both numerical and verbal hypotheses, science and businesses can test assumptions and theories and ultimately guide managers when making decisions.

This study is to show the relationship between the life expectancy of the United States of America compared to the life expectancy of other countries. The hypothesis of the study is that people live longer in the United States of America than in any other country. The countries compared to the United States of America are listed in the attachment. When it comes to hypothesis testing, the first step is stating the research...