What is a true statement about the random variables X and Y defined in the code chunk below? Please select all that apply.
# generate samples from random variable X
mux <- 10
sigx <- 4
x <- rnorm(100, mux, sigx)
# generate samples from random variabe Y
muy <- 20
sigy <- 4
y <- rnorm(100, muy, sigy) + x
What is a true statement about the random variables X and Y defined in the code chunk below? Please select all that apply.
# generate samples from random variable X
mux <- 10
sigx <- 4
x <- rnorm(100, mux, sigx)
# generate samples from random variabe Y
muy <- 20
sigy <- 4
y <- rnorm(100, muy, sigy)
X
What is a true statement about the random variables X and Y defined in the code chunk below? Please select all that apply.
# generate samples from random variable X
mux <- 10
sigx <- 4
x <- rnorm(100, mux, sigx)
# generate samples from random variabe Y
muy <- 20
sigy <- 4
y <- rnorm(100, muy, sigy)
a. X and Y are independent.
MX and Y are positively correlated.
X and Y are negatively correlated.
X and Y are uncorrelated.
b. X and Y are independent.
X and Y are positively correlated.
MX and Y are negatively correlated.
X and Y are uncorrelated.
c. X and Y are independent.
X and Y are positively correlated.
X and Y are negatively correlated.
✔X and Y are uncorrelated.