Question

identify the requirements for a discrete probability distribution. choose the correct answer below. a. the sum of the probabilities must equal one. b. the sum of the probabilities must equal one. each probability must be between zero and one inclusive. c. each probability must be between zero and one inclusive. d. there must be a fixed number of independent trials. there must be two mutually exclusive outcomes for each trial with a constant probability of success.

Explanation:

For a discrete probability distribution, two key requirements are that the sum of all probabilities of all possible discrete - valued outcomes must equal 1, and each individual probability must be between 0 and 1 (inclusive). Option A only mentions the sum requirement, Option C only mentions the individual - probability range requirement, and Option D describes requirements for a binomial distribution (a special type of discrete distribution) rather than general discrete probability distribution requirements.

Answer:

B. The sum of the probabilities must equal one. Each probability must be between zero and one inclusive.