237 237 474 11 if each time you pick a sock from the

. 237 + .237= .474
11. If each time you pick a sock from the drawer a sock just like it magically replaces it, what is the
probability of picking either a pair of white socks or a pair of black socks?

Probability of picking a white sock and then another white sock = .5*.5 = .25
Probability of picking either a pair of white socks or a pair of black socks = .25+.25 = .5
12. How can you guarantee success of picking a matching pair? In other words, what is the minimum
number of socks needing to be picked to guarantee a matching pair? (Hint: There is a right
answer to this question!)
13. Explain dependent and independent trials and then further describe the difference between
Question 10 and Question 11 as it relates to dependent and independent trials.