Exercise 15 of Section 12.2 included Minitab output for aregression of flexural strength
Chapter 12, Problem 33(choose chapter or problem)
Exercise 15 of Section 12.2 included Minitab output for aregression of flexural strength of concrete beams on modulusof elasticity.a. Use the output to calculate a confidence interval with aconfidence level of 95% for the slope b1 of the populationregression line, and interpret the resulting interval.b. Suppose it had previously been believed that when modulusof elasticity increased by 1 GPa, the associated trueaverage change in flexural strength would be at most.1 MPa. Does the sample data contradict this belief?State and test the relevant hypotheses.
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