Population Mean Inference

Data Summary

Variable Sample Size Mean Sample Std Dev
Initial.Weight 68 136.074 24.3711
Terminal.Weight 68 137.985 24.6101
[Initial.Weight - Terminal.Weight] 68 -1.91176 2.12824

Statistics for the difference [Initial.Weight - Terminal.Weight] is based on differences of observed pairs of data.

t-Based Confidence Interval

95% Confidence interval
Paired differences are used

Variable Midpoint Std Error DF Lower CL Upper CL Margin of Error
[Initial.Weight - Terminal.Weight] -1.91176 0.258087 67 -2.42691 -1.39662 0.515144

Bootstrap-Based Confidence Interval - Paired Difference
[Initial.Weight - Terminal.Weight]

Confidence level = 95%
Sample mean of paired differences = -1.911765
Bootstrap Std Error = 0.2577998
Number of replications = 10000 ; Random generator seed = 100

Variable Method Lower CL Upper CL Width
[Initial.Weight - Terminal.Weight] Percentile -2.41176 -1.41176 1

Distribution of Bootstrap Replications of Mean of Paired Differences
[Initial.Weight - Terminal.Weight]

Number of replications = 10000, Random generator seed = 100

  ,  The graph shows the distribution of   bootstrap replicates of   Initial.Weight - Terminal.Weight  ,  5% tail area , Percentile confidence limits , Observed sample mean