You have a drawer full of quirky socks. There are [x] polka-…

You have a drawer full of quirky socks. There are [x] polka-dotted socks and [y] striped socks in the drawer. You randomly pull out a sock several times (placing the sock back in the drawer between each draw) and record the results. You end up pulling [z] polka-dotted socks and [w] striped socks. What is the probability of that outcome?

7) For each bottle of wine that Italy produces, it gives up…

7) For each bottle of wine that Italy produces, it gives up the opportunity to make 10 pounds of cheese. France gives up the opportunity to produce 1 bottle of wine for every 25 pounds of cheese it produces. Which of the following is true about the comparative advantage between the two countries?