GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
If all the coins are fair, in that the probability of heads = probab
[#permalink]
16 Jun 2021, 02:16
16 Jun 2021, 02:16
Expert Reply
3
Bookmarks
00:00
Question Stats:
48% (01:03) correct
51% (01:29) wrong based on 39 sessions
Hide Show timer Statistics
Maya flipped 24 coins, each of which landed with either a head face-up or a tail face up, hereafter referred to as an outcome of “heads” or “tails.”
If all the coins are fair, in that the probability of “heads” = probability of “tails” = \(\frac{1}{2}\) for every toss, which of the following events has the greatest probability?
A. Of the 24 tosses, the number of “heads” equals 11.
B. Of the 24 tosses, the number of “heads” equals 12.
C. Of the 24 tosses, the number of “tails” equals 14.
D. Of the 24 tosses, the number of “tails” is at most 3.
E. Of the 24 tosses, the number of “heads” is it least 22
If all the coins are fair, in that the probability of “heads” = probability of “tails” = \(\frac{1}{2}\) for every toss, which of the following events has the greatest probability?
A. Of the 24 tosses, the number of “heads” equals 11.
B. Of the 24 tosses, the number of “heads” equals 12.
C. Of the 24 tosses, the number of “tails” equals 14.
D. Of the 24 tosses, the number of “tails” is at most 3.
E. Of the 24 tosses, the number of “heads” is it least 22
Re: If all the coins are fair, in that the probability of heads = probab
[#permalink]
16 Jun 2021, 08:32
16 Jun 2021, 08:32
1
As it is a fair coin with equal chances of heads and tails (50-50), out of X tosses the most probable outcome is X/2 of the tosses are Heads and X/2 of the tosses are Tails.
So of the 24 tosses, 12 heads and 12 tails are the most probable outcome. Answer B.
So of the 24 tosses, 12 heads and 12 tails are the most probable outcome. Answer B.
Re: If all the coins are fair, in that the probability of heads = probab
[#permalink]
21 Jun 2021, 01:34
21 Jun 2021, 01:34
How the probabilities would differ if all the possible outcomes have same probability?
Posted from my mobile device
Posted from my mobile device
