4. Can the following list represent a complete probability model?
P(2) =1/12, P(3) = 2/3, P(4) = 1/4 Lesson 9-4

yes

Step-by-step explanation:

probability model must be equal to 1

so summing up the above

P(2)+P(3)+P(4)=1/12+2/3+1/4

=1

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.