In a multiple regression based on 30 observations,the following information is provided:

Question

Quizplus · Accepted Answer

The Answer is 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.

with

.Also,

evaluated at 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.

and

is 2.8.
a.Construct a 95% confidence interval for 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.

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.

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