Listed below are speeds (mi/h) measured from traffic on a busy highway. This simple random sample was obtained at 3:30 P.M. on a weekday. Use the sample data to construct a 90% confidence interval estimate of the population standard deviation. 61 63 63 56 63 55 59 58 59 69 58 67 Click the icon to view the table of Chi-Square critical values. The confidence interval estimate is mi/h

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