Purchase Solution

Difference Between a Left-Tailed, Two-Tailed & Right-Tailed Test

Not what you're looking for?

Ask Custom Question

Explain the difference between a left-tailed, two-tailed, and right-tailed test. When would you choose a two-tailed test? How might you tell the direction of the test by looking at a pair of hypothesis? How might you tell which direction (or no direction) to make the hypothesis by looking at the problem statement (research question)?

Purchase this Solution

Solution Summary

The solution discusses the difference between a left-tailed, two tailed and right-tailed test.

Solution Preview

(a) The three types of statistical tests: left-tailed, two-tailed and right-tailed are used under different situations.

Which test is applied depends upon the hypothesis (claim) in question.

For example a claim such as "The mean salary of the professors of an institution is less than $10000" is a case

for a left-tailed test. Instead, a claim such as "The mean number of years of research experience required to be

conferred a doctorate is more than 10 years" is a case for a ...

Purchase this Solution


Free BrainMass Quizzes
Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.