Sample Size Calculator  ChiSquared Test  Sequential Sampling  2 Sample TTest  Survival Times  Count Data
Question: Does the hazard rate differ across two groups? (Compare means instead)
Sample 1 ( blue )  Survival function with confidence bands  Sample 2 ( red ) 

Enter survival times:

Enter survival times:

Verdict:  No significant difference
(logrank test; z = 0.0, p = 1.0) 

Confidence: 
95%


If the experiment is repeated many times, the confidence level is the percent of the time each sample's mean will fall within the confidence interval. It is also the percent of the time the hypothesis will be accepted (i.e., no difference detected), assuming the hypothesis is correct. 