A record label surveyed 150 random visitors to its website to discover whether they prefer metal, rock, hip-hop, or jazz. The survey showed that 27 visitors preferred metal, 78 preferred rock, 21 voted for hip-hop, and 24 liked jazz. If the company estimates sales of 6,000 copies a week at its online store, how many will likely be from the rock genre?

1,040
3,000
3,120
4,200

Probability (rock) :

78 / 150 = 13/25 = 52%

Rock is preferred by 52% of the 150 visitors that were surveyed

To find how many people will likely sell from the rock genre, you need to find 52% of the estimated sales (6,000 copies).

52% • 6000 = 3,120

Answer: C. 3,120

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Eduard22sly Eduard22sly · Answer 2 · 2022-04-13T16:14:53+02:00

Given the data from the question, the number of copies that will be for rock genre is 3120

Data obtained from the question

Metal = 27
Rock = 78
Hip hop = 21
Jazz = 24
Total visitor = 27 + 78 + 21 + 24 = 150
Total copies = 6000

Copies for rock genre =?

How to determine the number of copies for rock genre

The number of copies for rock genre can be obtained as follow:

Copies for rock genre = (rock visitor / total visit) × total copies

Copies for rock genre = (78 / 150) × 6000

Copies for rock genre = 3120

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