Question: A random sample of 10 observations is selected from a normal population. The sample mean was 12 and the sample standard deviation 3. Using the

A random sample of 10 observations is selected from a normal population. The sample mean was 12 and the sample standard deviation 3. Using the 0.05 significance level: Required: State the decision rule. Note: Round your answer to 3 decimal places. Compute the value of the test statistic. Note: Round your answer to 3 decimal places

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