Question: Given the following hypotheses: H 0 : = 400 H 1 : 400 A random sample of 12 observations is selected from

Given the following hypotheses:

H₀: μ = 400

H₁: μ ≠ 400

A 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.

b. Compute the value of the test statistic.

c. What is your decision regarding the null hypothesis?

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