Consider the following distribution for the variable X, where X= the number of houses owned by a selected american adult. Assume a negligible proportion of adults own 4 or more houses. what makes this a valid, legit probability distribution

Consider the following distribution for the variable X, where X= the number of houses owned by a selected american adult. Assume a negligible proportion of adults own 4 or more houses. what makes this a valid, legit probability distribution


x 0 1 2 3
p(x) .35 .6 .04 0.01


a) all the individual probabilities are between 1 and 0
b) the individual probabilities add up to 1
c) the probabilities get smaller for larger values of the variable
d) both A and B


Answer: d) both A and B


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