(B). Approximately nine out of every ten people in the human population are right-hand dominant. The code in the following chunk simulates a large series ($n=500$) of samples with replacement from a group of ten people, nine of whom are right-hand dominant. This is expressed as an indicator variable, $R=1$ if right-handed, $R=0$ otherwise. I4 v \"{r, echo=TRUE, message=FALSE} n