<PRE><B>Question 581990</B>
P(selected PG viewer) = (# of PG viewers)/(# total)


P(selected PG viewer) = 12/(4+12+15+9)


P(selected PG viewer) = 12/40


P(selected PG viewer) = 3/10



So the probability that the individual saw a movie that was rated PG is 3/10


In decimal form, this probability is 0.3 (which is a 30% chance)


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P(selected non PG viewer) = 1 - P(selected PG viewer)


P(selected non PG viewer) = 1 - 3/10


P(selected non PG viewer) = 10/10 - 3/10


P(selected non PG viewer) = (10 - 3)/10


P(selected non PG viewer) = 7/10


So the probability the the individual saw a movie that was rated something other than PG is 7/10


In decimal form, this probability is 0.7 (which is a 70% chance)</PRE>