Question

THUMBS UP for correct answer????? Got 2 hours. 4 decimal points

QUESTION 3 Solvent cement is used to join PVC joints. Researchers are interested in predicting the amount of time is needed for the joint to set (measured in hours) as it is related to temperature measured in degrees F for 4 to 8-inch diameter pieces. A random sample of PVC joints was taken and a linear regression model was found. Use the following output and the fact that R2 = 0.827 to answer the following questions. Lower 95% Upper 95% Coefficients Standard Error t Stat P-value Intercept 7.914 0.765 10.3445 2.7E-06 6.183 9.644 Temp(F) -0.083 0.013 -6.565 0.000103 -0.112 -0.055 Which is the correct interpretation the coefficient of determination in context? 90.9% of the sample variance in time is explained by the regression with temperature. 1. 82.7% of the sample variance in time is explained by the regression with temperature. 2 90.9% of the sample variance in temperature is explained by the regression with time. 3. 82.7% of the sample variance in temperature is explained by the regression with time. 4.

Answer 1

Waiting for my thumbs up! Thank You!

Question 3:

Option 2 is correct.

Question4: Option 3 is correct.

r=sqrt(0.827)=-0.909

Since slope is negative. So the correlation coefficient is negative.