Question

select the correct answer. 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?

a. 1040

b. 3000

c. 3120

d. 4200

Explanation:

Step1: Calculate total surveyed visitors

$27 + 78+21 + 24=150$

Step2: Find proportion of rock - music lovers

$\frac{78}{150}$

Step3: Estimate rock - genre sales

$6000\times\frac{78}{150}=3120$

Answer:

C. 3120