Given the probability p=0.36 that an event will happen, how do you find the probability that the event will not happen?

1 Answer
Alan P.
Oct 2, 2017

#"Probability"(!p)=0.64#

Explanation:

An event must either occur or not occur. That is either #p# or not #p# is certain.

The probability of certainty is #100%=1#

If #"Probability"(p)=0.36#
then
#color(white)("XXX")"Probability"(p)+"Probability"(!p)=1color(white)("xxxx")# where #!p# is used to denote "not "#p#

#color(white)("XXX")0.36+"Probability"(!p)=1#

#color(white)("XXX")"Probability"(!p)=1-0.36=0.64#

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