Mr. McElroy enjoys listening to his MP3 player, which has 2,000 songs in five different genres of music. He took a sample of the number of each type of song it played on two different one-hour sessions when it was set to play a random mix. The counts are shown in the table below. Which proportion would predict the number of jazz songs he has stored on his MP3 player?

Listening Samples from Mr. McElroy’s MP3 Player
Sample 1
Sample 2
Country
5
Country
3
Pop
4
Pop
3
Classical
3
Classical
5
Jazz
2
Jazz
4
Rock
6
Rock
5

Question

05-03-2019
Mathematics

contestada

Mr. McElroy enjoys listening to his MP3 player, which has 2,000 songs in five different genres of music. He took a sample of the number of each type of song it played on two different one-hour sessions when it was set to play a random mix. The counts are shown in the table below. Which proportion would predict the number of jazz songs he has stored on his MP3 player?

Listening Samples from Mr. McElroy’s MP3 Player
Sample 1
Sample 2
Country
5
Country
3
Pop
4
Pop
3
Classical
3
Classical
5
Jazz
2
Jazz
4
Rock
6
Rock
5

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kenziestowers kenziestowers · Answer 1 · 2021-02-03T18:49:22+01:00

kenziestowers kenziestowers

03-02-2021

Answer:

Pretty sure its StartFraction 3 over 20 EndFraction = StartFraction x over 2000 EndFraction aka 3/20 = x/2000

Step-by-step explanation:

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francocanacari francocanacari · Answer 2 · 2021-11-15T13:43:01+01:00

Mr. McElroy has 15% jazz songs on his MP3 player, so he has about 300 jazz songs on it.

Since Mr. McElroy enjoys listening to his MP3 player, which has 2,000 songs in five different genres of music, and he took a sample of the number of each type of song it played on two different one-hour sessions when it was set to play a random mix, and there were 6 jazz songs in a total of 40 songs, to determine the proportion that would predict the number of jazz songs he has stored on his MP3 player, the following calculation must be performed:

6/40 = X
3/20 = X
0.15 = X
0.15 x 2000 = 300

Therefore, Mr. McElroy has 15% jazz songs on his MP3 player, so he has about 300 jazz songs on it.

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