algebra I

posted by .

If you toss a coin, the probability of gettig heads is 1/2. If you toss a coin 2 times. the probability of getting heds each time is 1/2*1/2 or (1/2)^2.

-Write an expression to represent the probability of tossing a coin 'n' times and getting 'n' heads.
-Express your answer to the question above as a power of 2.

At first I thought the expression was (1/2)^n but then when I look at it again, it seems wrong.

  • algebra I -

    It is right!!

  • algebra I -

    Oh okay. Then for the second problem, would it be (1/2)^2?

  • algebra I -

    I am sorry, but the second part of the problem "express your answer to the question as power of 2" is confusing to me. Certainly, if you flip the coin TWICE, then it's a power of 2, as you said, but if you flip it N times, I don't know you can express this as a power of 2.

  • algebra I -

    they mean that n= n number of times in the equations


    but the product is not corresct if u replce an exponent of 2 for the n...

    the answer is said to be 2^-n

  • algebra I -

    Oh...ok, of course...

    2^-n is the same as (1/2)^n.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    In a game, a player tosses a coin 4 times. If the player gets 3 or 4 heads, he/she wins. What is the theoretical probability of winning this game?
  2. Probability

    You toss a fair coin four times. Find the probability of no more than three heads given that at least one toss resulted in heads. Thank you very much!!
  3. Finite Math

    A coin is loaded, so that the probability of a head occuring on a single toss is 2/3. In six tosses of the coin, what is the probability of getting all heads or all tails?
  4. Stat.

    A trick coin has been weighted so that heads occurs with a probability of p  2 3, and p(tails)  1 3. If you toss this coin 72 times, a. How many heads would you expect to get on average?
  5. math

    a fair coin is tossed in the air 4 times. if the coin lands heads up the first three tosses, what is the probability the coin will land heads up the fourth toss?
  6. algebra

    A coin is tossed 3 times. Find the probability of obtaining the following: a) heads on the first and last toss, and tails on the other toss b) at least 2 heads c) at most 2 heads
  7. finite math (probability

    suppose you toss a coin 100 times and get 57 heads and 43 tails. Based on the results what is the probability that the next toss will be head.
  8. Probability

    Consider 10 independent tosses of a biased coin with the probability of Heads at each toss equal to p, where 0<p<1. Given that there were 4 Heads in the first 7 tosses, find the probability that the 2nd Heads occurred at the …
  9. probability

    Adefective coin minting machineproducescoinswhoseprobability ofheadsisarandomvariable P with PDF 1+sin(2πp), if p ∈ [0,1],fP (p)= 0, otherwise. Inessence,aspecificcoinproducedby thismachinewillhavea fixedprobability P = …
  10. math

    Suppose you have an extremely unfair coin: the probability of a head is 1/5, and the probability of a tail is 4/5. If you toss the coin 40 times, how many heads do you expect to see?

More Similar Questions