Thirty-Five Employees Who Completed Two Years of Tertiary Education Were

question 52

Essay

Thirty-five employees who completed two years of tertiary education were asked to take a basic mathematics test. The mean and standard deviation of their marks were 75.1 and 12.8, respectively. In a random sample of 50 employees who only completed high school, the mean and standard deviation of the test marks were 72.1 and 14.6, respectively.
a. Estimate with 90% confidence the difference in mean scores between the two groups of employees.
b. Explain how to use the interval estimate in part a. to test the hypotheses.

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Definitions:

Natural Selection

The process in evolutionary biology where organisms better adapted to their environment tend to survive and produce more offspring, driving evolution.

Temperament

An individual's inherent personality traits, often apparent from infancy and thought to be biologically based.

Cerebral Asymmetry

Higher levels of brain activity in one cerebral hemisphere than the other.

Hemisphere Activity

involves the functions or processes occurring in the left and right hemispheres of the brain, which have different roles in control, emotion, and cognitive tasks.