A researcher is comparing the effectiveness of two sets of instructions for asse

Question

A researcher is comparing the effectiveness of two sets of instructions for assembling a book shelf. A sample of 24 college students is obtained, and each participant is randomly assigned to one of the two groups. Half of the participants (n = 12) are given both written and graphic instructions (“Written_Graphic”), and the other half (n = 12) receives written instructions only (“Written”). The researcher measures how much time is needed for each participant to assemble the book shelf. The scores are the number of minutes needed by each participant.   What statistics (one-sample t-test, t-test for two independent samples, or t-test for dependent samples) would you use to test the hypothesis? Provide your justification.

Explanation / Answer

One should use t-test for two independent samples for testing the hypothesis sunce here we have 2 independent samples of participants who have two different type of instructions.

Infact, in case of dependent samples, both samples have same number of paricipants, here one group may have 14 persons and other group has only 10 participants.

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