Question

me Listed below are speeds (mi/h) measured from traffic on a busy highway. This simple random sample was obtained at 3.30 PM. on a weekday. Use the sample data to construct a 90% confidence interval estimate of the population standard deviation ements 59 59 69 58 66 D 61 56 52 58 62 61 61 ments Click the icon to view the table of Chi-Square critical values. Plan The confidence interval estimate is mih<a mih debook (Round to one decimal place as needed) Does the confidence interval describe the standard deviation for all times durina the week? Choose the correct answer below atCrunch sC OA. No. The confidence interval is an estimate of the standard deviation of the population of speeds at 3:30 on a weekday, not other times Text O B. Yes, The contidence interval describes the standard deviation for all times during the week Chapter Contents Tools for Success Click to select your answer(s). Multimedia Librar quizzes ao not areer your grace sampie testS ana quizzes can be taxen Tor practice or ro buTO your stuay pian. sampre tests and Purchase Options 747 PM Type here to search 11/10/20 PRT S 44 ELETE FO F11 F7 FB FB F1 & 7 % 0

Answer 1

Ans n=12, S= 4.4073 19-19.424 2 901- C.21s Cn-DS -DS 2 4 R-.424 3-D9.424) 19.675 4.575 3.3403 6.8 -> Jhe Conn dence ndelval esladc 13.3<68 aptm Corwect