Data 605 Assignment 5

Create Two Uniform Distributions

B <- runif(10000000, min = 0, max = 1)
C <- runif(10000000, min = 0, max = 1)

hist(B)

hist(C)

Choose independently two numbers B and C at random from the interval [0, 1] with uniform density. Prove that B and C are proper probability distributions. Note that the point (B,C) is then chosen at random in the unit square

B + C < 1/2.

.125

X <- B + C
hist(X, main = "Histogram of B + C")

sum(X < .5) / 10000000
## [1] 0.1250159

BC < 1/2

.846

X <- B * C
hist(X, main = "Histogram of B x C")

sum(X < .5) / 10000000
## [1] 0.8467004

|B − C| < 1/2

.75

X <- abs(B - C)
hist(X, main = "Histogram of |B − C|")

sum(X < .5) / 10000000
## [1] 0.7499855

max{B,C} < 1/2

.25

X <- pmax(B,C)
hist(X, main = "Histogram of max{B,C}")

sum(X < .5) / 10000000
## [1] 0.2501383

min{B,C} < 1/2

.75

X <- pmin(B,C)
hist(X, main = "Histogram of min{B,C}")

sum(X < .5) / 10000000
## [1] 0.7499471

Corey Arnouts

March 3, 2019