A model relating fertilizer use to cotton yield is estimated using 62 observations, and the following estimates
Question:
= 15.43 + 0.12 (3.2431) (0.0371)
Where Y is the cotton yield in bushels/acre and X is the amount of fertilizer used in lb/acre. Standard errors of estimates are given in parentheses.
A: Formulate the appropriate null hypothesis, and alternative hypothesis, to test if fertilizer use has a positive effect on cotton yield. Calculate the test statistic and perform the test at 5 percent significance level. What is your conclusion?
B: Suppose the null hypothesis you constructed in part A is true. What is the probability of a Type I error?
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a H 0 b 0 H 1 b 0 The test statistic is the t test 01200371 32345 The ...View the full answer
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Related Book For 
Applied Regression Analysis and Other Multivariable Methods
ISBN: 978-1285051086
5th edition
Authors: David G. Kleinbaum, Lawrence L. Kupper, Azhar Nizam, Eli S. Rosenberg
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