Test of inference directionality of test

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Reference no: EM1316392

For each of the following two scenarios/descriptions (pp.2), please select two responses, one to indicate the most appropriate test of inference, whether the test is directional (one way), non-directional (two-way), or cannot be determined

Test of inference Directionality of test:

(a) a one group t-test on means (f) directional

(b) a paired groups t-test on means (g) non-directional

Description (2.a): To determine whether patients with Traumatic Brain Injury (TBI) have reduced problem solving ability, 35 TBI patients are compared with a group of 48 normal similar in terms of age, gender, and socio-economic status. Both groups are given a well known problem-solving task (so you can assume that there is no measurement problem)

The most appropriate significance test/test inference is: _____.

The alternative hypothesis/directionality of the test is _____.

Description (2. b): To determine whether a particular physical rehabilitation treatment changes the status of pain among patients who are suffering from lower back pain, 109 patients are administered a test of perceived pain both before the treatment, as well as six month post the treatment.

The most appropriate significance test/test inference is: _____.

The alternative hypothesis/directionality of the test is: ____.

Reference no: EM1316392

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