Assume you had a random sample of 50 graduate students' GRE scores and you calculated a mean score of 300 with a standard deviation of 47. Using a confidence level of 95%, calculate and interpret every aspect of the confidence level. 5 Possible Points of Extra Credit Mean = 300 SD = 47 Sample Size (n) = 50 Degree of Freedom = n-1 = 50-1 = 49 CI = 95% Margin of Error: Upper Bound: Lower Bound: Interpretation (hint: if we were to randomly sample from this population 100 times, what is the probability the sample mean GRE scores will fall between the upper and lower bounds?):