a) What percentage of these films were rated R? b) What percentage of these film

Question

  

a) What percentage of these films were rated R?

b) What percentage of these films were R-rated comedies?

c) What percentage of R-rated films were comedies?

d) What percentage of comedies were rated R?

PG-13 19 34 PG he table to the right summarizes 354 films from a certain year that have been lassified into a genre and have a rating. Complete parts a) through d) below. Action/Adventure 64 23 25 13 32 16 35 58 109 Musical Suspense/Thriller Horror Total 2 42 13 76 114 151 ) What percentage of these films were rated R?

Explanation / Answer

#-denotes number of cases

a>p(r rated films)=#r-rated films/#total cases=151/354=0.42

b>p(r-rated commedies)=#r-rated and comedy/#total cases=32/354=0.090

c>p(comedy| given its r-rated)=#r-rated and comedy/#r-rated films=32/151=0.21

d>p(r-rated|(given its a) comedy)=#r-rated and comedy/#comedy=32/92=0.34

probabilities are calculated for percentages multiply them by 100

(nearest 2 decimal)

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