Question 3 Fit a simple linear regression model with response variable, Y, and predictor variable, X Use following R output for the fitted simple linear regression model to answer the rest of exam questions Coefficients: Estimate Std. Error t value Pr>It) (Intercepo 1.5761 0.9258 1.702 0.1872 2.6135 0.4206 7??? Use the above estimates of coefficients to calculate how much does the expected value of Y change when X increases by 1 unit? Write a number rounded to three decimal places.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Question 3
Fit a simple linear regression model with response voriable, Y and predictor variable, X. Lise following R output for the fitted simple lineor
regression model to answer the rest of exam questions.
Coefficients:
Estimate Std. Error tvalue Prt1)
(Intercept) 1.5761
2.6135
0.9258
7.702 0.1872
0.4206
7???
????
Use the above estimates of coefficients to calculate how much does the expected value of Y change when X increases by 1
unit? Write a number rounded to three decimal places.
Add your answer
Transcribed Image Text:Question 3 Fit a simple linear regression model with response voriable, Y and predictor variable, X. Lise following R output for the fitted simple lineor regression model to answer the rest of exam questions. Coefficients: Estimate Std. Error tvalue Prt1) (Intercept) 1.5761 2.6135 0.9258 7.702 0.1872 0.4206 7??? ???? Use the above estimates of coefficients to calculate how much does the expected value of Y change when X increases by 1 unit? Write a number rounded to three decimal places. Add your answer
Question 13
Suppose the residual/regression standard error from Ris 0.7299 with 3 degrees of freedom. Use the estimates in Question 3 to obtain
a 95% prediction interval for an individual Y-value at X-2.3. Give the lower bound of the prediction interval rounded to
three decimal places.
Add your answer
Question 14
Give the upper bound of the 95% prediction interval asked in the previous question (rounded to three decimal places).
Use the editor to format your answer
Transcribed Image Text:Question 13 Suppose the residual/regression standard error from Ris 0.7299 with 3 degrees of freedom. Use the estimates in Question 3 to obtain a 95% prediction interval for an individual Y-value at X-2.3. Give the lower bound of the prediction interval rounded to three decimal places. Add your answer Question 14 Give the upper bound of the 95% prediction interval asked in the previous question (rounded to three decimal places). Use the editor to format your answer
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