Refer back to the data in Exercise 4, in which y = ammonium concentration (mg/L) and x
Question:
a. Obtain the equation of the estimated regression line and use it to calculate a point prediction of ammonium concentration for a future observation made when ammonium concentration is 25 ml/h.
b. What happens if the estimated regression line is used to calculate a point estimate of true average concentration when transpiration is 45 ml/h? Why does it not make sense to calculate this point estimate?
c. Calculate and interpret s.
d. Do you think the simple linear regression model does a good job of explaining observed variation in concentration? Explain.
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Step by Step Answer:
a From the summary provided And So the equation of the least squares regression line is 91010 21572 ...View the full answer
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Related Book For 
Probability And Statistics For Engineering And The Sciences
ISBN: 9781305251809
9th Edition
Authors: Jay L. Devore
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