HW4 - Homework 4 Solutions 1. & 2. The eosinophil...

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Unformatted text preview: Homework 4 Solutions 1. & 2. The eosinophil counts from 40 healthy rabbits • bootstrap estimates--------------------------------------------- Basic Statistics from the original data Mean= 124.78 SD= 58.45 CV= 46.84------------------------------------------------------------------------------------------ Number of bootstrap saples: 5000 Mean SD CV MSE 82.196 67.739 27.062 Standard Error 9.067 8.138 5.086 Margin of error 18.132 16.461 10.404--------------------------------------------- • 95% bootstrap intervals--------------------------------------------- Bootstrap 95% Confidence Interval for the population mean: based on t-pivot: Number of bootstrap saples: 5000 108.17 < mu < 147.27------------------------------------------------------------------------------------------ Bootstrap Confidence Intervals for the Population Mean: ORDINARY NONPARAMETRIC BOOTSTRAP Call: boot(data = rabbit, statistic = mean.fun, R = 5000) Bootstrap Statistics : original bias std. error t1* 124.775 -0.419955 9.099455 BOOTSTRAP CONFIDENCE INTERVAL CALCULATIONS Based on 5000 bootstrap replicates 1 CALL : boot.ci(boot.out = boot.rabbit, conf = 0.95, type = c("norm", "basic", "perc", "bca")) Intervals : Level Normal Basic 95% (107.4, 143.0 ) (106.0, 142.0 ) Level Percentile BCa 95% (107.6, 143.5 ) (110.0, 146.9 ) Calculations and Intervals on Original Scale--------------------------------------------- 2 7. Comparison of intervals based on7....
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This note was uploaded on 07/22/2011 for the course STA 4502 taught by Professor Staff during the Spring '08 term at University of Florida.

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HW4 - Homework 4 Solutions 1. & 2. The eosinophil...

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