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Considering purchasing lumber from one of two different

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A general contractor is considering purchasing lumber from one of two different suppliers. A sample of 12 boards is obtained from each supplier and the length of each board is measured. The estimated standard deviations from the samples are s1 = 0.13 inch and s2 = 0.17 inch, respectively. Assume the lengths follow a normal distribution. Does this data indicate the lengths of one supplier's boards are subject to less variability than those from the other supplier? Test using a level of significance equal to 0.02.

Reference no: EM132518858

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