A list named a is created using the statement below. Which choice returns TRUE? a <- list("10", TRUE, 5.6)

Which function returns [1] TRUE FALSE TRUE? indat <- c("Ash Rd","Ash Cir","Ash St")

Suppose you need to randomly assign 100 study subjects into one of 5 groups such that there are exactly 20 subjects in each group. Which of the following R functions creates a variable Y that randomly distributes the 100 study subjects into 5 groups of equal size?

Which R function fits a simple linear regression model of x predicting y?