In 2008,the Student Body of a State University in Utah

question 47

Essay

In 2008,the student body of a state university in Utah consisted of 30% freshmen,25% sophomores,27% juniors,and 18% seniors.A sample of 400 students taken from the 2009 student body showed that there are 138 freshmen,88 sophomores,94 juniors,and 80 seniors.Test with 5% significance level to determine whether the student body proportions have changed.

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Definitions:

Producer Cooperative

An organization owned and operated by its members to produce and supply goods and services for the benefit of the members, rather than external investors.

Pesticide-Free

Describes products, usually agricultural, that have been produced without the use of synthetic pesticides, appealing to health and environmental concerns.

Organic Beef

Beef from cattle that have been raised without the use of synthetic hormones, antibiotics, and fed organic feed.

Specialized Resources

Resources that are uniquely suited for a particular production process or task.