PrakKomstat_Pert4

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

#untuk p(X=15)
eks<-function(x,lambada){lambada*exp((-1)*lambada*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

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