data_berpasangan.R

data=read.csv("C:/Tugas Statistika/data_berpasangan.csv", sep=";")
data

##    x   y
## 1 78 100
## 2 75  95
## 3 67  70
## 4 77  90
## 5 70  90
## 6 72  90
## 7 78  89
## 8 74  90
## 9 77 100

t.test(data$y, data$x, paired=TRUE)

## 
##  Paired t-test
## 
## data:  data$y and data$x
## t = 7.6525, df = 8, p-value = 6.003e-05
## alternative hypothesis: true mean difference is not equal to 0
## 95 percent confidence interval:
##  11.33381 21.11064
## sample estimates:
## mean difference 
##        16.22222