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OpenStudy (anonymous):
A fair coin is flipped 7 times. What is the probability of obtaining at least 1 head?
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OpenStudy (campbell_st):
just use complementary events P(at least 1 head) = 1 - P (7 tails)
OpenStudy (anonymous):
@campbell_st What do you do from there?
OpenStudy (campbell_st):
the probability of 7 tails is P(7 tails) = (1/2)^7
OpenStudy (anonymous):
Thank you!! @campbell_st
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