11-8 A plot-count regeneration survey was conducted using /100-acre plots located randomly over the tract of interest. The tree count per plot follows: Plot 1 2 3 4 5 Count 5 2 4 0 3 Plot 6 7 8 9 10 Count 1 •2263 6 Rupe a Estimate the mean number of trees per acre. bor b Compute the coefficient of variation for numbers of trees per acre. Compute the 90 percent confidence interval for the mean.
11-8 A plot-count regeneration survey was conducted using /100-acre plots located randomly over the tract of interest. The tree count per plot follows: Plot 1 2 3 4 5 Count 5 2 4 0 3 Plot 6 7 8 9 10 Count 1 •2263 6 Rupe a Estimate the mean number of trees per acre. bor b Compute the coefficient of variation for numbers of trees per acre. Compute the 90 percent confidence interval for the mean.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:11-8 A plot-count regeneration survey was conducted using 1/100-acre plots located
randomly over the tract of interest. The tree count per plot follows:
Count DD Plot
Count
Plot
1
2
3
4
5
52403
67890
10
2263
b
a Estimate the mean number of trees per acre.
b Compute the coefficient of variation for numbers of trees per acre.
c Compute the 90 percent confidence interval for the mean.
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