A Lumber Company Has Claimed That the Standard Deviation for the Lengths

question 33

Essay

A lumber company has claimed that the standard deviation for the lengths of their six-foot boards is .4 inches or less. To test their claim, a random sample of 16 six-foot boards is selected; and it is determined that the variance of the sample is .3. Do the results of the sample support the company's claim? Use α = .1.

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