In 2003, the Student Body of a State University in Michigan

question 85

Short Answer

In 2003, the student body of a state university in Michigan consists of 30% freshmen, 25% sophomores, 27% juniors, and 18% seniors. A sample of 400 students taken from the 2004 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. = ______________
Critical Value = ______________
Conclusion: ______________
The student body proportions ______________ changed since 2003.

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Definitions:

Axons

Long, slender projections of nerve cells that conduct electrical impulses away from the neuron's cell body.

Sella Turcica

A saddle-shaped depression in the sphenoid bone at the base of the human skull, housing the pituitary gland.

Neurohypophysis

The posterior part of the pituitary gland responsible for the storage and release of hormones like vasopressin and oxytocin, produced in the hypothalamus.

Secretory Activity

The process of producing and releasing substances such as enzymes or hormones from a cell or gland.