21. When people leum a new task, their performance usually htigives when they see tested the next day, but only if they get at leit 6 bours of sleep (5tickgold, Whidber. Schirmer, Patel, & Hobson. 2000). The following stata demonstrile this phenomence. The participants learned a Visual discrimination task on orte day, and then were tested on the task die following day, Half of the participants were allowed to have at least 6 hours of sleep and the other half were kept awake all night, Is there a significant difference between the two conditions? Use a two-called cest with

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Performance Scores 6 hours Sleep No Sleep Mf - 72 SS = 440

$5-456