Suppose that a garage finds that 30 customers of 138 customers samples get their oil changes on time. Find a 98% confidence interval of the true proportion. What is the upper bound of the confidence interval? (round to 4 decimal places)
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Suppose that a garage finds that 30 customers of 138 customers samples get their oil changes on time. Find a 98% confidence interval of the true proportion.
What is the upper bound of the confidence interval? (round to 4 decimal places)
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