Question

suppose that a spotify playlist has 8 tracks. after listening to all the songs, you decide that you like 3 of them. with the random feature on the playlist, each of the 8 songs is played once in random order. find the probability that among the first two songs played
(a) you like both of them. would this be unusual?
(b) you like neither of them.
(c) you like exactly one of them.
(d) redo (a)-(c) if a song can be replayed before all 8 songs are played (if, for example, track 2 can play twice in a row).
(a) the probability that you like both songs is 0.107
(round to three decimal places as needed.)
would it be unusual for you to like both of the songs? choose the correct answer.
no
yes
(b) the probability that you like neither song is 0.357
(round to three decimal places as needed.)
(c) the probability that you like exactly one song is
(round to three decimal places as needed.)

Explanation:

Step1: Calculate total probability

The sum of probabilities of all mutually - exclusive events is \(1\). Let \(P(A)\) be the probability that you like both songs (\(P(A)=0.107\)), \(P(B)\) be the probability that you like neither song (\(P(B) = 0.357\)), and \(P(C)\) be the probability that you like exactly one song.

We know that \(P(A)+P(B)+P(C)=1\) (since these are the only three cases: like both, like neither, like exactly one).

Step2: Solve for \(P(C)\)

Substitute the values of \(P(A)\) and \(P(B)\) into the equation \(P(C)=1-(P(A) + P(B))\).

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Answer:

\(0.536\)