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You know that the scores on a commonly used test memory test are normally distributed with = 40 and 2 =64. You think that stress
You know that the scores on a commonly used test memory test are normally distributed with
= 40 and2=64. You think that stress makes memory more difficult. You select 30 fellow college students at random and place them in a stressful environment while taking the commonly used test of memory and find that their mean score was 29. Which hypothesis test needs to be employed here?
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