AS/A2 Stats 1 Stats 2

S3 Topic 3: Estimation, confidence intervals and tests
Graphing a confidence interval
The graph shows the Normal distribution N(mean,var). By varying the level percentage you can alter the proportion of the graph plotted in red. For example when level=95, the area under the red curve is 95% of the total area.

Summary Based on free Java applets from JavaMath