7. For each random variable de ned here, describe the set of possible values for the variable, and state whether the variable is discrete.

a. X  the number of unbroken eggs in a randomly chosen standard egg carton

b. Y  the number of students on a class list for a particular course who are absent on the rst day of classes

c. U  the number of times a duffer has to swing at a golf ball before hitting it

d. Xthe length of a randomly selected rattlesnake

e. Z  the amount of royalties earned from the sale of a rst edition of 10,000 textbooks

f. Y  the pH of a randomly chosen soil sample g. X  the tension (psi) at which a randomly selected tennis racket has been strung h. X  the total number of coin tosses required for three individuals to obtain a match (HHH or TTT)