Exhibit 14-6
You Are Given the Following Information About Y $\alpha$

question 7

Essay

Exhibit 14-6
You are given the following information about y and x.
-A company has recorded data on the daily demand for its product (y in thousands of units) and the unit price (x in hundreds of dollars). A sample of 15 days demand and associated prices resulted in the following data.
a.Using the above information, develop the least-squares estimated regression line and write the equation.
b.Compute the coefficient of determination.
c.Perform an F test and determine whether or not there is a significant relationship between demand and unit price. Let $\alpha$ = 0.05.
d.Would the demand ever reach zero? If yes, at what price would the demand be zero?

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Definitions:

Thalamus

A large mass of gray matter deeply situated in the forebrain at the topmost portion of the brainstem, functioning primarily as a central relay station for sensory impulses and as a center for pain perception.

Brain Stem

The posterior part of the brain, adjoining and structurally continuous with the spinal cord, responsible for basic vital life functions such as breathing and heartbeat.

Midbrain

A central part of the brainstem that plays an important role in vision, hearing, motor control, sleep/wake, arousal, and temperature regulation.

Pons

A part of the brainstem that links the medulla oblongata and the thalamus, critical for regulating breathing and sleep cycles.