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A sample of 30 patients in a doctor's office showed that they had to wait an average of 35 minutes before they could see the
A sample of 30 patients in a doctor's office showed that they had to wait an average of 35 minutes before they could see the doctor. The sample standard deviation is 5 minutes. Assume the population of waiting times is normally distributed. At 95% confidence, compute the margin of error.
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