Question

I have a bag with 10 Red markers and 5 blue markers. On selecting 2 markers at random one after the other, what is the probability of obtaining 1 red and 1 blue marker? SHOW ALL YOUR WORK TO GET FULL CREDIT. TTT Arial . 3 (12pt) • TE

Answer 1

Solution Giuen triat Nog ved marker = 10 No of blue masker = 5 marker = 15. Tota) 10.9 with replacement : PC Select one red eind sine blue) - plseieeted is red marka) p[seleder) where P (selectéel is red marker) no. of red marker Total nuo.oy marker 10 15 olm where pl'selected in Blue marker)a nu.oi blue marker total no. of marker : 3 : 15 PC selected onered and one blue)= 9 x 7 / 8 2 9. = 0.2222

probabilly two selected marker is one red and one blue 18 0.2222. NOTE: withou outseplace lacement: PC 1 Red and 1 blue) – Pf one red). P (one blue) . 10 15 14 5 21 = 0.238095 n 0.2381 -- pl randomly selected one ved and oneblue is 0.2381 ,