Posttest.Komstat_Zulfadli Ahwal Ramadhan

#Untuk P(X=4)
eks <- function(x,lambda){lambda*exp((-1)*lambda*x)}
eks(4,0.16)

## [1] 0.08436679

#Untuk P(X<=4)
cdfexp <- function(x, lambda = 0.16) {
  pdf <- function(t) {
    lambda * exp (-lambda * t)
  }
  hasil <- integrate(pdf, lower = 0, upper = x)
  return(hasil$value)
}
cdfexp(4, 0.16)

## [1] 0.4727076

uniform <- function(x, a = 0, b = 1) {1/(b-a)}
uniform(6, a = 2, b = 10)

## [1] 0.125

dunif(6, min = 2, max = 10)

## [1] 0.125

norm<-function(x,miu,sigma)(1/(sigma*sqrt(2*pi))*exp(-1/2*((x-miu)/sigma)^2))
norm(4,5,1)

## [1] 0.2419707

dnorm(4,mean = 5,sd = 1)

## [1] 0.2419707