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For the next 2 questions, please read the description below. A student records the repair costs...

For the next 2 questions, please read the description below. A student records the repair costs for 30 randomly selected computers from a local repair shop where he works. A sample mean of $216.53 is subsequently computed. Assume that the population standard deviation is $15.86, and the students is constructing a confidence interval. What is the error of estimate for a 98% confidence interval? What is the lower bound for a 96% confidence interval?

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