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A professor randomly selected six students to take an aptitude test. Their mean score was 77.67 with a standard deviation of 5.54. Assume that the

A professor randomly selected six students to take an aptitude test. Their mean score was 77.67 with a standard deviation of 5.54. Assume that the scores on the aptitude test have a normal distribution. Construct a 90% confidence interval for the mean score of all students. O A. (71.86, 83.48) O B. (73.24, 82.10) O C. (73.11, 82.23) O D. (73.95, 81.39)

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