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Mathematics 21 Online
OpenStudy (anonymous):

Let A and B be two mutually exclusive events of a sample space S. If P(A) = 0.4 and P(B) = 0.1, find the probability P( A u B)

OpenStudy (anonymous):

and that A u B has a line over it

OpenStudy (zarkon):

\[P(\overline{A\cup B})\]

myininaya (myininaya):

oh how did you do that

OpenStudy (anonymous):

yes thats what it should look like

OpenStudy (zarkon):

P(\overline{A\cup B})

OpenStudy (dumbcow):

since they are mutually exclusive P(AUB) = P(A) + P(B)

myininaya (myininaya):

\[P(\overline{A \cup B} )\] nice! and i always use n for intersection i want to write the correct symbol for intersection how to do that

OpenStudy (zarkon):

\cap

myininaya (myininaya):

to find \[P(\overline{ A \cup B})=1-(P(A)+P(B))\]

myininaya (myininaya):

\[\cap \] :)

OpenStudy (zarkon):

Look at that beautiful notation :)

OpenStudy (anonymous):

so its just .5

OpenStudy (amistre64):

i can do underline ;) \[\underline{AuB}\]

myininaya (myininaya):

yes casemac

OpenStudy (zarkon):

\[\overbrace{P(A\cap B)}\]

OpenStudy (zarkon):

;)

OpenStudy (amistre64):

nice mustache :)

myininaya (myininaya):

yes

OpenStudy (amistre64):

o-o \(\overbrace{U}\)

OpenStudy (zarkon):

lol...nice

OpenStudy (zarkon):

yes.... .5

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