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OpenStudy (anikate):
What is the probability of obtaining between 50and 55 tails inclusive when a fair coin is flipped 80 times?
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OpenStudy (anonymous):
use binomial probability . probability of n tails = 80Cn* (1/2)^n *(1/2)^80-n i.e 80Cn*(1/2)^80 find probability of 50, 51,52,53,54 and 55 tails and add these 6 values.
OpenStudy (anikate):
what?
OpenStudy (anikate):
can you plz explain this to me
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