Confidence interval for the population standard deviation

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The values listed below are the waiting times (in minutes) of customers at the Bank of Providence, where customers enter any one of three different lines that have formed at three teller windows. Construct a 95% confidence interval for the population standard deviation  and interpret the results.

4.2         5.4         5.8         6.2         6.7         7.7         8.5         9.3         10.0

Reference no: EM131826135

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