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 an 80% confidence interval estimate of the population standard deviation. 63 61 61 57 61 52 59 58 59 68 60 67 D Click the icon to view the table of Chi-Square critical values. The confidence interval estimate is mi/h

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Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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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 an 80% confidence interval estimate of the population standard
deviation.
63
61 61
57
61
52
59
58
59 68
60
67 D
Click the icon to view the table of Chi-Square critical values.
The confidence interval estimate is mi/h <a< mi/h.
(Round to one decimal place as needed.)
Does the confidence interval describe the standard deviation for all times during the week? Choose the correct answer below.
O A. 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.
O B. Yes. The confidence interval describes the standard deviation for all times during the week.
Click to select your answer(s).
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Transcribed Image 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 an 80% confidence interval estimate of the population standard deviation. 63 61 61 57 61 52 59 58 59 68 60 67 D Click the icon to view the table of Chi-Square critical values. The confidence interval estimate is mi/h <a< mi/h. (Round to one decimal place as needed.) Does the confidence interval describe the standard deviation for all times during the week? Choose the correct answer below. O A. 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. O B. Yes. The confidence interval describes the standard deviation for all times during the week. Click to select your answer(s). MacBook Pro & %23 $4 3 4 5 8 9 Q W Y %1 A F G H K C V B
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