Reading the Titanic dataset

setwd("C:/Users/Jaswanth/Downloads")
titanic.df<-read.csv(paste("Titanic Data.csv",sep = ""))
View(titanic.df)

Average age of the survivors and the average age of the people who died.

titanictable<-aggregate(Age~Survived,data=titanic.df,mean)
titanictable
##   Survived      Age
## 1        0 30.41530
## 2        1 28.42382

Running a t-test to test the hypothesis:

H2: The Titanic survivors were younger than the passengers who died.

t.test(titanic.df$Age~titanic.df$Survived)
## 
##  Welch Two Sample t-test
## 
## data:  titanic.df$Age by titanic.df$Survived
## t = 2.1816, df = 667.56, p-value = 0.02949
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  0.1990628 3.7838912
## sample estimates:
## mean in group 0 mean in group 1 
##        30.41530        28.42382

Since the p value less than 0.05 we can say that the survivors were younger than the passengers who died.The difference in age is significant.