View each column as a collection of independent observations of a random variable.
a. In each case, what kind of variable is represented, continuous or discrete? Why?
b.* Consider the event “annual salary is above $40,000.” Find the value of the binomial random variable X that represents the number of times this event occurred. Also find the binomial proportion p and say what it represents.
c. What fraction of employees are male? Interpret this number as a binomial proportion. What is n?