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need full ans Given the following hypotheses: Ho : HIS 13 A random sample of 42 observations is selected from a normal population. The sample

need full ans

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Given the following hypotheses: Ho : HIS 13 A random sample of 42 observations is selected from a normal population. The sample mean was 15 and the sample standard deviation was 3. Using the 0.05 significance level: a. State the decision rule. (Round the final answer to 3 decimal places.) (Click to select) v Hy if > b. Compute the value of the test statistic. (Round the final answer to 3 decimal places.) Value of the test statistic c. What is your decision regarding the null hypothesis? (Click to select) v Ho. At the 0.01 significance level, the mean (Click to select) v greater than 13

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