What is the reasoning behind the use of a two-tailed test in a research project?

What will be an ideal response?


Confidence intervals are two-tailed. This is due to the fact that the normal curve has two sides, or halves, that are split by the mean. The result of this is the rather pessimistic reality that the two-halves of the curve bring with it the result that there are two ways to be wrong with a confidence interval. The interval might be above the mean and miss it by being too far out along the positive tail, or the interval might be below the mean, missing it by being too far out along the negative end. Either scenario is a possibility, hence the use of a two-tailed test.

Criminal Justice

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What Supreme Court case ruled on the authorization of seizure of items found in plain view?

A. Coolidge v. New Hampshire B. Terry v. Ohio C. Husty v. United States D. Katz v. United States

Criminal Justice

“Known burglars” are called such because they ______.

a. are weak enough in their trade to be known to police b. have strong reputations among other criminals c. have strong familiarity with the criminal networks in their area d. are “in the know” regarding the latest techniques in burglary

Criminal Justice

Life course theories recognize that as people mature the factors that influence their behaviors change. At first, family relations may be most influential. In later adolescence, _________ and _________ relations dominate

Fill in the blank(s) with correct word

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An evaluation to determine whether a program achieved its intended result is

a. An impact assessment. b. A character assessment. c. A progress response. d. A committee paper.

Criminal Justice