TM-KOMSTAT-PERT4.R

#Contoh Soal 1
norm<-function(x,miu,sigma){
  1/(sigma*sqrt(2*pi))*exp(-1/2*((x-miu)/sigma)^2)
}

norm(750,800,50)

## [1] 0.004839414

dnorm(750,mean=800,sd=50)

## [1] 0.004839414

#Contoh Soal 2
#Contoh Soal 2
#Untuk P(X=15)
eks<-function(x,lambda){
  lambda*exp((-1)*lambda*x)
}

eks(15,0.05)

## [1] 0.02361833

#Untuk P(X<=15)
cdfexp<-function(x,lambda=0.05){
  pdf<-function(t){
    lambda*exp(-lambda*t)
  }
  
  hasil<-integrate(pdf,lower=0,upper=x)
  return(hasil$value)
}

cdfexp(15,0.05)

## [1] 0.5276334

#Contoh Soal 3
uniform<-function(x,a=0,b=1){
  1/(b-a)
}

uniform(20,a=10,b=30)

## [1] 0.05

dunif(20,min=10,max=30)

## [1] 0.05