Edit: Made an awful blunder in my chart . . . *blush*
. . . I'll correct it now . . .
We can organize the information . . .
Sandra's music bag contains:
3 CDs of country music
6 CDs of rock and roll
4 CDs of rap music
5 tapes of country music
1 tape of rock and roll
3 tapes of rap music
As Sandra drives, she often reaches into her bag and randomly pulls out some music.
There are 22 units, 7 are Rap music. .
What is the probably that she will select some rap music?
There are 22 units, 13 are CDs. .
b) Find P(CD), the probability that she will randomly select a CD.
There are 22 units, 5 are C&W tapes: .
c) Find the probability that she will select a tape of country music.
There are 22 units, 15 are not R & R: .
d) Find the probability that the music she randomly selects is not rock and roll.