Probability
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statistics
air coin is flipped 20 times. a. Determine the probability that the coin comes up tails exactly 15 times. b. Find the probability that the coin comes up tails at least 15 times. c. Find the mean and standard deviation for the
asked by nneamaka on September 23, 2013 
Statistics
Suppose Tori has an unfair coin which lands on Tails with probability 0.28 when flipped. If she flips the coin 10 times, find each of the following: Question 5 options: P(No more than 3 Tails) P(Exactly 1 Tail) P(At least 5 Tails)
asked by Anonymous on June 2, 2013 
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A biased coin is tossed 5 times where p(t) = .6. determine the probability that if you have 2 tails, you have 3 tails.
asked by Ann on May 25, 2013 
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A biased coin is tossed 5 times where p(t) = .6. determine the probability that if you have 2 tails, you have 3 tails.
asked by Ann on May 25, 2013 
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A coin is tossed five times. Find the probability of getting four tails. I realize that getting four tails is the exact same thing as getting only one heads, but how would you figure out this problem using probability rules?
asked by Emily on January 2, 2011 
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Sara tossed a fair coin five times, and Kaleb tossed a fair coin three times. There were five heads and three tails in the eight tosses. What is the probability that either Sara or Kaleb tossed exactly three heads? Express your
asked by Anonymous on June 27, 2012 
statistic
A coin is tossed 6 times. Find the probability that all 6 tosses are tails.
asked by Michaela on November 13, 2013 
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A coin is biased so that a head is twicw as likely to occur as a tail. Suppose the coin is tossed three times. What is the probality of getting at exactly two tails
asked by Washington on October 2, 2012 
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Sarah tosses 5 coins, one after the other. a) How many different outcomes are possible? b) Draw a tree diagram to illustrate the different possibilities. c) In how many ways will the first coin turn up heads and the last coin turn
asked by Jeff on May 7, 2017 
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A coin is tossed three times. Use a tree diagram to find the number of possible outcomes that could produce exactly two heads. I don't know how to write out a tree diagram on here, but I think this one is heads > heads, tails >
asked by Fawn on July 3, 2016 
Math
A biased coin is tossed 3 times. The probability that the coin will land on heads is 0.6 The probability that the coin will land on tails three times is less than 0.1 Is this correct? Show all your working.
asked by Geny on April 23, 2016