A statistics course at a large university is taught in each semester. A student has noticed that the students in semester 1 and semester 2 are enrolled in different degrees. To investigate, the student takes a random sample of 25 students from semester 1 and 25 students from semester 2 and records their final marks (%) provided in the table below. Excel was used to generate descriptive statistics on each sample.
Assume that student final marks are normally distributed in each semester. 
Estimate and interpret a 90% confidence interval of the ratio of population variances of final student marks from semester 1 and semester 2.
Definitions:
Reflexive Behaviors
Automatic, involuntary responses to specific stimuli without conscious thought process involved.
Instinctual Behaviors
Innate, fixed patterns of action that are performed in response to specific stimuli, often essential for an organism's survival.
Rubella
A contagious viral disease characterized by fever and rash, important to control during pregnancy due to risk of birth defects.
Heart Defects
Abnormalities in the heart's structure that are present from birth, affecting its overall function and efficiency.
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