Nozione di probabilità con frequenza relativa
Mahnoor randomly selects times to walk into a local restaurant and observe the type of music being played. She found that the restaurant was playing country 11 times, rock & roll 17 times, and blues 8 times.Use the observed frequencies to create a probability model for the type of music the restaurant is playing the next time Mahnoor walks in. Input your answers as fractions or as decimals rounded to the nearest hundredth.
Country
0.31
Rock & roll
0.47
Blues
0.22
Hint Let's put the count of each type of music from the sample into a table.
Country
11
Rock & roll
17
Blues
8
Total
36
Hint We get the probabilities by dividing the frequencies by the total. (Remember to round to the nearest hundredth.)
Country
11
11/36
Rock & roll
17
17/36
Blues
8
8/36
Total
36
1
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