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Suppose scores on exams in statistics are normally distributed with an unknown population mean and a population standard deviation of 3 points. A random sample of 36 scores is taken and gives a sample mean of 68. Find a 95% confidence interval estimate for the population mean exam score by providing the following information. Confidence Area in One Z- Level Tail Score 50% 0.25 0.674 80% 0.1 1.282 90% 0.05 1.645 95% 0.025 1.96 98% 0.1 2.326 99% 0.005 2.576 (Include two decimal places below) a. a = b. zo.025 = c. EBM d. The lower bound of the Confidence Interval is e. The upper bound of the Confidence Interval is