a. Exact weights of quarters now in circulation in the United States
b. Numbers of tosses of quarters required to get heads
c. Responses to the survey question “Did you smoke at least one cigarette in the last week?”
d. Numbers of spins of roulette wheels required to get the number 7
e. Exact foot lengths of humans
f. Shoe sizes (such as 8 or 8½) of humans
In identify the given values as a discrete random variable, continuous random variable, or not a random variable.