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flips coin four times what the probability of the coin landing on tails exactly three times 

          flips coin four times what the probability of the coin landing on tails exactly three times

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Elementary Statistics a Step by Step Approach
Elementary Statistics a Step by Step Approach
Allan G. Bluman 9th Edition
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flips coin four times what the probability of the coin landing on tails exactly three times
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Transcript

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00:01 In this problem, we are given that there is a coin, and this is flipped four number of times.
00:08 And we have to find the probability that the coin lands tails on all four times.
00:15 So basically we have to get the probability of getting four tails when a coin is tossed four times.
00:21 So we will consider this as binomial distribution where the number of trials is the number of times we are tossing the coin, which is four.
00:28 And let's consider the probability of the success as the probability of getting a tail which is just 1 by 2 because we know that when a coin is tossed we have just two possible outcomes which are head or tail and the probability of the failure well that would be 1 minus p which is even 1 by 2 and we will consider x here as the random variable which is representing the number of successes which means that this is representing the number of tails which appear and the probability that we get 4 tails this is a represented by the expression p when x is equal to 4...
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