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It is thought that the mean length of trout in lakes in a certain region is...

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Basic Math

It is thought that the mean length of trout in lakes in acertain region is 20 inches. A sample of 46 trout from oneparticular lake had a sample mean of 18.5 inches and a samplestandard deviation of 4 inches. Conduct a hypothesis test at the0.05 level to see if the average trout length in this lake is lessthan mu=20 inches.

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Solution State the hypotheses The first step is to state the null hypothesis and an alternative hypothesis Null hypothesis u 20 Alternative hypothesis u 20 Note that these hypotheses constitute a    See Answer
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