Question: Significant? A test of a null hypothesis versus a two-sided alternative gives t = 2.18. (a) The sample size is 16. Is the test result

Significant? A test of a null hypothesis versus a two-sided alternative gives t = 2.18.

(a) The sample size is 16. Is the test result significant at the 5% level? Explain how you obtained your answer.

(b) The sample size is 10. Is the test result significant at the 5% level?

(c) Sketch the two t distributions to illustrate your answers.

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