Bag A has two gold balls and six brown balls. Bag B has two gold balls and two brown balls. A game consists of two stages. First, you toss a fair coin; if heads you get bag A, if tails you get bag B. You (randomly) choose two balls from the bag (without replacement). Let Y be the number of gold balls, and find the probability distribution function for Y;

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation:

m

step-by-step explanation: