Probability 83638

When tossing a coin 4 times in a row, what is the probability that a sign will come up 3 times?

Correct answer:

p =  0.25

Step-by-step explanation:

p0=1/2=21=0.5 p=(34)p03(1p0)43=(34)0.53(10.5)43=40.530.51=0.25

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