For a spot speed study in which 100 observations were obtained, the mean speed was 52km/h and the standard deviation was 4.6 km/h. 1.What is the margin of error on the estimate of true mean speed obtained from this sample? 2.What is a reasonable estimate of the 85th percentile speed based on the information available? Use N = ( )2 in your determinations. In addition read up on 85th percentile speed.
For a spot speed study in which 100 observations were obtained, the mean speed was 52km/h and the standard deviation was 4.6 km/h. 1.What is the margin of error on the estimate of true mean speed obtained from this sample? 2.What is a reasonable estimate of the 85th percentile speed based on the information available? Use N = ( )2 in your determinations. In addition read up on 85th percentile speed.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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For a spot speed study in which 100 observations were obtained, the mean speed was 52km/h and the standard deviation was 4.6 km/h.
1.What is the margin of error on the estimate of true mean speed obtained from this sample?
2.What is a reasonable estimate of the 85th percentile speed based on the information available?
Use N = ( )2 in your determinations. In addition read up on 85th percentile speed.
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