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 99% confidence interval estimate of the population standard deviation. 61 65 65 57 65 53 59 58 59 70 58 67 Click the icon to view the table of Chi-Square critical values. mi/h < < mi/h