Which of the following defines the probability of an event C, ...

[joe]

Which of the following defines the probability of an event C, P(event C)?
 a. The probability of C equals 1.
 
  b. The probability of C equals the number of times C occurred divided by the total number of possible outcomes.
 
  c. The probability of C equals the total number of outcomes possible divided by the number of times C occurred.
 
  d. The probability of C equals the number of times C occurred.

Question 2

A key input variable in many marketing models of customer loyalty is the:
 a. mean profit per customer
  b. number of customers
  c. churn rate
  d. time horizon
  e. all of these choices

[Dinolord]

Answer to Question 1

b

Answer to Question 2

c