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A general contractor is considering purchasing lumber from one of two different suppliers. A random sample of 12 "2x4's" of a certain length of each board is measured. The sample standard deviation of length for the first supplier's boards is found to be s1 = 0.13 inch, while s2 = 0.17 inch for the second supplier. Do the data indicate that the lengths of one supplier's 2x4's are subject to more variability than those of the other supplier? Assume α = 0.05.

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Category:- Statistics and Probability
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