In a random sample the weights of 24 black angus steers of, Ask an Expert

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In a random sample, the weights of 24 Black Angus steers of a certain age have a standard deviation of 238 pounds. Assuming that the weights constitute a random sample from a normal population, test the null hypothesis σ = 250 pounds against the two-sided alternative σ 250 pounds at the 0.01 level of significance.

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