assume you had a random sample of 50 graduate students GRE scores and you calculate a mean score of 350 with standard deviation of 45 using a confidence level of 95%. m Mean = 350 SD=45 Sample size (n) = 50 Degree of freedom = n-1 = 50-1=49 CI 95% Critical value = 2.010 Calculate the margin of error,upper bound, lower bound.

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