In a survey of households with television sets, the proportion of television sets in various types of

Question:

In a survey of households with television sets, the proportion of television sets in various types of rooms was
Room Proportion of TV Sets
Bedroom...................................0.37
Living Room..............................0.26
Den.........................................0.22
Basement..................................0.12
Kitchen....................................0.02
Bathroom..................................0.01
a. What is the probability that a TV set is located in a living room or den?
b. What is the probability that a TV set is not located in a bedroom?