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JohnnyCowCow
Group Title
Maria has two fair coins. She flips them in the air. She believes it is equally likely they land 2 heads, 2 tails, or 1 head and 1 tail. Which of the following statements is NOT true?
Answers:
A. The probability of 2 heads is 25 %.
B. The probability of 1 head and 1 tail is 33 %.
C. The probability of 2 heads is less than the probability of 1 head and 1 tail.
D. The probability of either 2 heads or 2 tails is the same as the probability of 1 head and 1 tail.
 one year ago
 one year ago
JohnnyCowCow Group Title
Maria has two fair coins. She flips them in the air. She believes it is equally likely they land 2 heads, 2 tails, or 1 head and 1 tail. Which of the following statements is NOT true? Answers: A. The probability of 2 heads is 25 %. B. The probability of 1 head and 1 tail is 33 %. C. The probability of 2 heads is less than the probability of 1 head and 1 tail. D. The probability of either 2 heads or 2 tails is the same as the probability of 1 head and 1 tail.
 one year ago
 one year ago

This Question is Closed

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.1
Maria has it wrong. Can you come up with all the possible outcomes of this coin toss?
 one year ago

JohnnyCowCow Group TitleBest ResponseYou've already chosen the best response.1
... umm ok?
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.1
Fill in this table: dw:1364248207123:dw Remember, each coin can only have an outcome of heads or tails.
 one year ago

JohnnyCowCow Group TitleBest ResponseYou've already chosen the best response.1
Tail Tail Head Head Head Tail Tail Head
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.1
Right. How many possible different outcomes are there?
 one year ago

JohnnyCowCow Group TitleBest ResponseYou've already chosen the best response.1
It is either B or C I cannot decide
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.1
Good. There are 4 possible outcomes. 1 outcome out of 4 is 2 heads (25% probability) 1 outcome out of 4 is 2 tails (25% probabilty) 2 outcomes out of 4 are 1 heads and 1 tails (50% probability)
 one year ago

JohnnyCowCow Group TitleBest ResponseYou've already chosen the best response.1
So it is B?
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.1
Correct. The probabillity of 1 heads and 1 tails is 50%, not 33%. That's why I wrote above Maria is wrong. She thought that all three outcomes have the same probabiltity.
 one year ago

JohnnyCowCow Group TitleBest ResponseYou've already chosen the best response.1
Thank you! My teacher puts topics on our semester projects that she hasn't covered yet :P
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.1
I guess she's challenging her students. Part of your challenge is to come to OS and ask to try to figure it out. You're welcome.
 one year ago
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