[ANSWER] Help please with a statistic question

Question description

Given the following hypotheses:H0 : μ = 400H1 : μ ≠ 400A random sample of 12 observations is selected from a normal population. The sample mean was 407 and the sample standard deviation 6. Using the .01 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 (Click to select)insideoutside the interval (,  ).b.Compute the value of the test statistic. (Round your answer to 3 decimal places.) Value of the test statisticc.What is your decision regarding the null hypothesis?RejectDo not reject

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