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 98% confidence interval...

Extracted text: 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 98% confidence interval estimate of the population standard deviation. 61 63 63 57 63 54 60 59 60 68 58 67 中 Click the icon to view the table of Chi-Square critical values. The confidence interval estimate is mi/h<>< mi/h.="" (round="" to="" one="" decimal="" place="" as="">