Mathematics

Mathematics, 19.10.2019 15:20, bossboybaker

You ask your friend: "did you observe at least three heads? ". your friend replies, "yes." what is the probability that coin 2 had been chosen?

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Mathematics, 01.07.2019 15:00, pinkpearl20

There are two coins in a bag. for coin 1, p(h) = ½ and for coin 2, p(h) = 1/3. your friend chooses one of the coins at random and tosses it 5 times. a. what is the probability of observing at least 3 heads? b. you ask your friend: “did you observe at least 3 heads? ”. your friend replies, “yes”. what is the probability that coin 2 has been chosen?

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Mathematics, 20.09.2019 04:00, powellmj9216

Abox has three coins. "one has two heads, one has two tails", and the other is a fair coin with one head and one tail. a coin is chosen at random, is flipped, and comes up heads. a. what is the probability that the coin chosen is the two-headed coin? b. what is the probability that if it is thrown another time it will come up heads?

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Mathematics, 07.10.2019 10:30, sdfghyuji123

You flip a fair coin 4 times, and your friend flips the same coin 40 times. which of these outcomes is most likely? a) the proportion of heads your friend observes is closer to 0.5 than the proportion of heads you observe. b)the proportion of heads you observe is closer to 0.5 than the proportion of heads your friend observes. c)the proportions of heads you and your friend observe is equal. d)the proportion of heads is not affected by the number of trials.

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Mathematics, 31.10.2019 06:31, tqjb2007

Your friend decides to flip a coin repeatedly to analyze whether the probability of a head on each flip is 1/2. he flips the coin 10 times and observes a head 7 times. he concludes that the probability of a head for this coin is 7/10=.70. a. your friend claims that the coin is not balanced, since the probability is not .50. what's wrong with your friend's claim? b. if the probability of flipping a head is actually 1/2, what would you have to do to ensure that the cumulative proportion of heads falls very close to 1/2?

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