Mathematics
mrsmarooner
2016-05-01 23:29:57
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
ANSWERS
karahockenberry
2016-05-02 03:37:19

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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