The Following Regression Model Has Been Proposed to Predict Monthly $\hat { Y }$

question 23

Short Answer

The following regression model has been proposed to predict monthly sales at a shoe store.
$\hat { Y }$ = 40 - 3X1 + 12X2 + 10X3
where
X1 = competitor's previous month's sales in $1,000s) X2 = store's previous month's sales in $1,000s)
X3 =
= sales in $1,000s)
$\hat { Y }$
a. Predict sales in dollars) for the shoe store if the competitor's previous month's sales were
$9,000, the store's previous month's sales were $30,000, and no radio advertisements were run.
b. Predict sales in dollars) for the shoe store if the competitor's previous month's sales were
$9,000, the store's previous month's sales were $30,000, and 10 radio advertisements were run.

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Definitions:

Tibial Nerve

A branch of the sciatic nerve that extends down the lower leg, responsible for innervating various parts of the foot and leg.

Medial Plantar Nerves

Nerves that supply sensation and muscle control to the medial aspect of the bottom of the foot, involved in the movements and sensory perception of the foot.

Lateral Plantar Nerves

Branches of the tibial nerve that supply sensory and motor innervation to parts of the foot.

Pelvic Floor

A group of muscles and tissues that support the organs in the pelvis, including the bladder, rectum, and, in women, the uterus and vagina.