# Find the probability

Jun 20th, 2015
DotaCN
Category:
Mathematics
Price: \$5 USD

Question description

1. While still half asleep, you randomly select a black sock from your drawer. After you remove that sock, the drawer contains two white socks and five more black socks. Without replacement you continue to randomly select one sock at a time from your drawer until another black sock is selected. Draw a probability tree diagram to answer the question. Find the probability that exactly three draws are needed to get another black sock.
 a.17/21 b.13/14 c.1/21 d.3/14 e.5/21

(Top Tutor) Daniel C.
(997)
School: Cornell University

Studypool has helped 1,244,100 students

## Review from our student for this Answer

SoccerBoss
Jun 20th, 2015
"Excellent work as usual"

1828 tutors are online

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors