Purchase Solution

Whether a problem is a one sided test or a two sided test

Not what you're looking for?

Ask Custom Question

Could you explain when and why one would use a one sided test vs a two sided test; I am confused about what "drives" the selection of one type over the other?

Purchase this Solution
Solution Summary

This solution helps determine whether a problem is a one-sided or two-sided test.

Solution Preview

Please see the attached files.

The choice of one-sided or two-sided test depends on the form of alternative hypothesis. If the alternative hypothesis is in the form , we have to use two-sided test. On the other hand, if the alternative hypothesis is either in the form or form, we have to use one-sided test.

To provide a detailed explanation, first I will provide the five steps of a test procedure, known as five-step procedure.

Step1. Specify the null hypothesis H0 and alternative hypothesis H1. The null hypothesis is the hypothesis that the researcher formulates and proceeds to test. If the null hypothesis is rejected after the test, the hypothesis to be accepted is called the alternative hypothesis.
Step2. Specify the significance level (). The significance level of a test is the probability of rejecting a null hypothesis when it is true. A test is to be constructed in such a manner that the probability of committing this error (Type I error) a pre ...

Purchase this Solution
Free BrainMass Quizzes
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.

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.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Measures of Central Tendency

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

View More Free Quizzes
Related BrainMass Solutions

  • Hypothesis Testing: One Sample Inference

    a two-sided test is to be used with ?

  • Statistics testing for mean acceleration

    Why is a one-sided test better than a two-sided test in this situation? Can you change the situation so that a two-sided test would be appropriate and a one-sided test would not be appropriate? Please see the attached file.

  • Null and Alternative Hypothesis

    of the difference between two population means, irrespective of whether the test is one-sided or two-sided?

  • Null Hypothesis and Alternate Hypothesis; Critical Value

    The critical value for any hypothesis test depends on the significance level at which the test is carried out, and whether the test is one-sided or two-sided.

  • When to use a t-test and when to use a z-test

    In all cases, use a two-sided test when you are testing the hypothesis that two means (or two proportions) are not equal, and use a one-sided test when you are testing the hypothesis that one mean is greater than or less than the other.

  • Two real life examples of hypothesis testing technique

    one-sided or two-sided test 2.

  • Hypothesis Testing

    a)State the Null and the Alternate Hypothesis: b)Is the Alternate Hypothesis one-sided or two sided?

  • One-tailed and Two-tailed Tests

    State a hypothesis related to this study that would cause you to conduct a two-tailed test. What is a one-tailed test? What is a two-tailed test? Explain at least three differences between one- and two-tailed tests.

  • Two-Sided Test

    510144 Two-Sided Test 15.54 Power of a two-sided test. Power calculations for two-sided tests follow the same outline as for one-sided tests. Look at the example with a test of H0: u = 128 versus Ha: u /= 128 at the 5% level of significance.

View More Related Solutions