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A random sample of 100 students is taken from a larger population of students in a multi-lecture course and the sample mean (average) of their

A random sample of 100 students is taken from a larger population of students in a multi-lecture course and the sample mean (average) of their final grades is found to be 62.25. Suppose it is known that the population standard deviation is 3.2. You wish to create a 98% confidence interval.The z/2 (found from R) used to calculate the 98% confidence interval is

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