Construct a 95% interval estimate of the ratio of the population variances using the following results from two independently drawn samples from normally distributed populations. 
Definitions:
Depressed Mood
A psychological state characterized by persistent feelings of sadness, hopelessness, and loss of interest or pleasure in activities.
Advance Directive
Legal documents that allow individuals to specify their wishes for medical care if they become unable to make decisions for themselves.
Amyotrophic Lateral Sclerosis
Amyotrophic Lateral Sclerosis (ALS) is a progressive neurodegenerative disease that affects nerve cells in the brain and spinal cord, leading to loss of muscle control.
Parkinson's Disease
A progressive neurological disorder that affects movement, often including tremors, stiffness, and slowness of movement.
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