Text In a survey conducted to understand the commuting times of 20 randomly individuals, the mean commuting time was found to be 28.6 minutes, with a population standard deviation of 3.2 minutes. z and t tables Text a) Find the critical value for the 99% confidence interval. Write the exact value from the table. b) Determine the 99% confidence interval ror the true mean of commuting time. Round answers to three decimal places. Type the lower limit (smaller value) in answer box 2 and the upper limit in answer box 3. [ Text AV

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