[Step-by-Step] For a sample of 12 items from a normally distributed population for which the standard deviation is σ = 17.0, the sample mean, is 230.8.


Question: For a sample of 12 items from a normally distributed population for which the standard deviation is σ = 17.0, the sample mean, is 230.8. At the 0.05 level of significance, test H 0 : μ < 220 versus H 1 : μ > 220. Determine and interpret the p -value for the test.

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