Question: The estimated regression equation between sales data (Y in $1,000s) and advertising data (x in $100s) results the following: Y = 12 + 1.8 x.

The estimated regression equation between sales data (Y in $1,000s) and advertising data (x in $100s) results the following: Y = 12 + 1.8 x.

n = 17

SSR = 225

SSE = 75

Sb1 = 0.2683

What is the critical t value for testing the significance of the slope at 95% confidence?

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