Which of the following random variables (X
) is discrete? Why? [Hint: List the appropriate values for each X
a. X is the number of light bulbs on a chandelier containing eight light bulbs that need to be replaced this week.
b. X is the number of lobsters eaten at a picnic on the beach.
c. X is the number of customers frequenting a convenience store during business hours.
d. X is the number of points scored by the hometown football team.
e. X is the number of free-throw attempts before the first basket is made.
f. X is the number of senior citizens attending the next town council meeting.
2. Table E.5.2
contains data pertaining to the results of a survey in which n
= 300 people were randomly selected and asked to indicate their preference regarding the candidates for the upcoming mayoral election. Transform this absolute frequency distribution to a discrete probability distribution. What key process allows us to do this?
Table E.5.2 Survey Results.