Suppose the die is tossed. we introduce two random variables x and y . let x equal 1 if the result is greater than 3 and 0 otherwise. (a). let y equal 1 if the result is odd and 0 otherwise. (b) find the joint probability mass function of x and y . (c) are the random variables x and y independent? justify your answer. (d) compute erx2 ? y s.

Arianna is buying plants for her garden. she buys 15 flowering plants for $96. pink flowering plants sell for $8, and purple flowering plants sell for $5. how many pink flowering plants did arianna buy? i figured out the answer! the answer is 7. 8x +5y = 96 plug in 7 for x 8 (7) + 5y = 96 56 + 5y = 96 subtract 56 from both sides 5y/y = 40/5 y = 8 she bought 7 pink and 8 purple plants

Which region represents the solution to the given system of inequalities? |-0.5x+y23 | 1.5x+ys-1 5 4 -3 -2 -1 1 2 3 4

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list