1. Useful prediction intervals for y can be obtained from a regression analysis. 


2.  The mean response u_{y} serves as the point estimate for estimating both the mean and the individual prediction of y given x.  

3. 
The residual sum of the squares is the numerator portion of the formula for the variance of y about the regression line. 


4. 
To conduct a valid regression analysis, both x and y must be approximately normally distributed. 


5. 
One concern about the depletion of the ozone layer is that the increase in UV light will decrease crop yields. An experiment was conducted in a green house where soybean plants were exposed to varying levels of UV levels  measured in Dobson units. At the end of the experiment the yield (kg) was measured. A regression analysis was performed with the following results. Which of the following is correct? 


6. 
One concern about the depletion of the ozone layer is that the increase in UV light will decrease crop yields. An experiment was conducted in a green house where soybean plants were exposed to varying levels of UV levels  measured in Dobson units. At the end of the experiment the yield (kg) was measured. A regression analysis was performed with the following results. The least squares regression line is the line: 


Subject  Mathematics 
Due By (Pacific Time)  07/31/2014 05:00 pm 
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