Part of an Excel output relating Y (dependent variable) and 4 independent variables, X1 through X4, is shown below. 
a.Fill in all the blanks marked with "?"
b.At 95% confidence, which independent variables are significant and which ones are not? Fully explain how you arrived at your answers.
Definitions:
Demand Strategy
Approaches businesses use to increase demand for their products or services, often through marketing and innovation.
Unstable
Lacking consistency or regularity; prone to sudden change or unpredictability.
Supply Chain Strategy
The plan and execution of all processes involved in sourcing, procuring, converting, and all logistics management activities, aiming to maximize customer value and achieve a sustainable competitive advantage.
Outdoor Furniture
Furniture specifically designed to be used outside, typically made of materials that are resistant to weather, such as waterproof fabrics and rust-resistant metals.
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