Question: Given the following sample data: x = 15 s 2 = 270 n = 30 test the null hypothesis that the true mean is equal

Given the following sample data:

x̅ = 15 s² = 270 n = 30

test the null hypothesis that the true mean is equal to 12, against a two-sided alternative hypothesis. Draw the distribution of e under the null hypothesis and indicate the rejection regions for this test.

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