When a Regression Model Was Developed Relating Sales (Y) of a Company

question 1

Short Answer

When a regression model was developed relating sales (y) of a company to its product's price (x₁), the SSE was determined to be 495. A second regression model relating sales (y) to product's price (x₁) and competitor's product's price (x₂) resulted in an SSE of 396. At α = .05, determine if the competitor's product's price contributed significantly to the model. The sample size for both models was 33.

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Definitions:

Reliability

The likelihood that a system or component will perform its required functions for a specified period under stated conditions.

Components

Individual parts or elements that combine or work together within a larger product, system, or mechanism.

Series

A sequence of numbers, objects, or events arranged in a specific order and often following a specific rule.

Parallel

Concurrent or simultaneous; in computing, refers to processes that are executed at the same time.