Question: (a) What is the difference between a one-tailed test of significance and a two-tailed test of significance? (b) What are the disadvantages of using one-tailed

(a) What is the difference between a one-tailed test of significance and a two-tailed test of significance?

(b) What are the disadvantages of using one-tailed tests of significance? Of using two-tailed tests of significance?

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