Multiple Choice
An economist estimates the following model: y = β0 + β1x + ε. She would like to construct interval estimates for y when x equals 2. She estimates a modified model where y is the response variable and the explanatory variable is now defined as x+ = x - 2. A portion of the regression results is shown in the accompanying table. ![An economist estimates the following model: y = β<sub>0</sub> + β<sub>1</sub>x + ε. She would like to construct interval estimates for y when x equals 2. She estimates a modified model where y is the response variable and the explanatory variable is now defined as x<sup>+</sup> = x - 2. A portion of the regression results is shown in the accompanying table. According to the modified model, which of the following is a 95% confidence interval for E(y) when x equals 2? (Note that t<sub>0.025,10</sub> = 2.228.) A) [0.41, 4.63] B) [14.21, 35.35] C) [18.63, 30.93] D) [20.35, 25.65]](https://d2lvgg3v3hfg70.cloudfront.net/TB6618/11ea8309_a972_0eb8_b223_fb2611faf4d2_TB6618_00.jpg)
![An economist estimates the following model: y = β<sub>0</sub> + β<sub>1</sub>x + ε. She would like to construct interval estimates for y when x equals 2. She estimates a modified model where y is the response variable and the explanatory variable is now defined as x<sup>+</sup> = x - 2. A portion of the regression results is shown in the accompanying table. According to the modified model, which of the following is a 95% confidence interval for E(y) when x equals 2? (Note that t<sub>0.025,10</sub> = 2.228.) A) [0.41, 4.63] B) [14.21, 35.35] C) [18.63, 30.93] D) [20.35, 25.65]](https://d2lvgg3v3hfg70.cloudfront.net/TB6618/11ea8309_a972_35c9_b223_01d7532b77e0_TB6618_00.jpg)
According to the modified model, which of the following is a 95% confidence interval for E(y) when x equals 2? (Note that t0.025,10 = 2.228.)
A) [0.41, 4.63]
B) [14.21, 35.35]
C) [18.63, 30.93]
D) [20.35, 25.65]
Correct Answer:
Verified
Correct Answer:
Verified
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