13. For each example, state whether the one- sample, two-independent-sample, or

Question

13. For each example, state whether the one- sample, two-independent-sample, or related- samples t test is most appropriate. If it is a related-samples t test, indicate whether the test is a repeated-measures design or a matched-pairs design. (a) A professor tests whether students sit- ting in the front row score higher on an exam than students sitting in the back row. (b) A graduate student selects a sample of 25 participants to test whether the average time students attend to a task is greater than 30 minutes. [c) A researcher matches right-handed and left-handed siblings to test whether right-handed siblings express greater emotional intelligence than left-handed siblings

Explanation / Answer

(a) two sample t-test

The two-sample t-test is used to determine if two population means are equal. here two samples are front and back row

(b) one sample t-test

The One Sample t Test can only compare a single sample mean to a specified constant. here specified constant is 30 mintures and one sample is used

(c) matched pair t-test

A match paired t-test is used to compare two population means where you have two samples in which observations in one sample can be paired with observations in the other sample

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