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Posted by on Monday, September 23, 2013 at 9:19pm.

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 random variable X giving the number
of tails in this coin flipping problem.

  • statistics - , Saturday, October 10, 2015 at 9:42am

    15

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