In a Multiple Regression Based on 30 Observations,the Following Information

question 73

Essay

In a multiple regression based on 30 observations,the following information is provided: with .Also, evaluated at and is 2.8.
A)Construct a 95% confidence interval for if x₁ equals 40 and x₂ equals 30.
B)Construct a 95% prediction interval for y if x₁ equals 40 and x₂ equals 30.
C)Which interval is narrower? Explain.

• A)Construct a 95% confidence interval for if x₁ equals 40 and x₂ equals 30.
• B)Construct a 95% prediction interval for y if x₁ equals 40 and x₂ equals 30.
• C)Which interval is narrower? Explain.

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