SOLUTION: If the probability that an event will happen is 0.3, what is the probability of the event's complement? I just need to know if I have the correct answere of 0.7 as the complement.

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Question 471879: If the probability that an event will happen is 0.3, what is the probability of the event's complement? I just need to know if I have the correct answere of 0.7 as the complement. If not, what is the correct complement from these remaining choices. A. 0.1 B. 0.3 C. 1.0. Thank you.
Answer by sudhanshu_kmr(1152) About Me  (Show Source):
You can put this solution on YOUR website!

yes, it is true..
given P(A)= 0.3
P'(A) = 1 - 3/10 = 7/10 i.e 0.7