The diameter of steel rods manufactured on two different extrusion machines is being investigated. Two random samples
Question:
(a) Is there evidence to support the claim that the two machines produce rods with different mean diameters? Use a = 0.05 in arriving at this conclusion.
(b) Find the P-value for the t-statistic you calculated in part (a).
(c) Construct a 95% confidence interval for the difference in mean rod diameter. Interpret this interval.
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Related Book For
Applied Statistics And Probability For Engineers
ISBN: 9781118539712
6th Edition
Authors: Douglas C. Montgomery, George C. Runger
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