Question: Use the sample data from Problem 15.2 to answer the following questions: From Problem a. Construct a 90% confidence interval for the dependent variable when

Use the sample data from Problem 15.2 to answer the following questions:

From Problem

a. Construct a 90% confidence interval for the dependent variable when x₁ = 30 and x₂ = 20.
b. Interpret the meaning of the interval constructed in part a.
c. Construct a 90% prediction interval for the dependent variable when x₁ = 30 and x₂ = 20.
d. Interpret the meaning of the interval constructed in part c.

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