THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 95

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
In a stratified random sample of students on a small campus,sample members were asked to rate,on a scale of 1 (poor)to 5 (excellent),opportunities for extracurricular activities.The results are shown in the table below.

-If a total sample of 120 students is taken,determine the number of freshmen and sophomores under the optimum allocation scheme,assuming that the stratum population standard deviations are the same as the corresponding sample values.

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Definitions:

Electrical Messages

Signals transmitted along neurons through changes in electrical potential, facilitating communication within the nervous system.

Nervous Tissue

A type of tissue composed of neurons and glial cells, specializing in the transmission of electrical nerve impulses throughout the body.

Neuroglial Cell

Neuroglial cells, commonly known as glial cells, support, protect, and maintain the homeostasis of the nervous system, playing roles in nutrient supply to neurons and damage repair.

Electrical Impulses

Rapid fluctuations of voltage across a membrane, used by neurons and muscle cells for communication and activation.