Average Age of Survivors And Died

aggregate(titanic.df$Age,by=list(titanic.df$Survived), FUN=mean)
##   Group.1        x
## 1       0 30.41530
## 2       1 28.42382

Average Age of Survivors: 28.42382 and Dead: 30.41530.

Ttest

NULL Hypothesis: The titanic survivors were NOT younger than the passengers who died.

t.test(titanic.df$Age, titanic.df$Survived, paired=TRUE)
## 
##  Paired t-test
## 
## data:  titanic.df$Age and titanic.df$Survived
## t = 67.065, df = 888, p-value < 2.2e-16
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  28.41458 30.12782
## sample estimates:
## mean of the differences 
##                 29.2712

P-Value < 2.2e-16

Hence, It our NULL hypothesis is disproved. Hence, The titanic survivors were younger than the passengers who died.