Question: Given the following hypotheses: Ho=470 H: 470 A random sample of 13 observations is selected from a normal population. The sample mean was 475 and

Given the following hypotheses: Ho=470 H: 470 A random sample of 13 observations is selected from a normal population. The sample mean was 475 and the sample standard deviation was 9. Using the 0.05 significance level: a. State the decision rule. (Negative amount should be indicated by a minus sign. Round your answers to 3 decimal places.) Reject H0 when the test statistic is the interval ( b. Compute the value of the test statistic. (Round your answer to 3 decimal places.) c. What is your decision regarding the null hypothesis? O Do not reject O Reject

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