Question

Just tell me we will use two Sample independent test or the two sample dependent test.

An experiment was carried out to compare recall ability when reading electronically compared to hard copy. Thirty students from a first-year university English class agreed to participate. Each student was shown a randomly generated list of 40 five-letter words on a tablet and given 2 minutes to memorise them. They were then given 4 minutes to write down as many of the words as they could recall. An hour later, the students repeated the experiment but this time the list of 40 five-letter words was given to them on a piece of paper. In each case, the percentage of correctly recalled words was recorded. The aim is to see if there is a difference in the percentage of words correctly recalled between the electronic list and the paper list.

Answer 1

Sol:

here n1=n2=30

and the samples are dependent

as the same sample of students are selected and measured percentage of correctly recalled words was recorded.

Ho:Mud=0

there is nodifference in the percentage of words correctly recalled between the electronic list and the paper list.

where Mud=Mu1-Mu1

Mu1=average percentage of correctly recalled words for electronic list

Mu2=average percentage of correctly recalled words for paper list

Ha:Mud not =0

there is a difference in the percentage of words correctly recalled between the electronic list and the paper list.

two sample dependent test.