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

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 pape

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