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.

65,64,64,56,64,53,61,60,61,68,60,66

Click the icon to view the table of Chi-Square critical values

The confidence interval estimate is

__mi/h<><__mi>

(Round to one decimal place as needed.)

Extracted text:

Jun 01, 2022

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