Question

In order to better decide how to market a new line of clothing, Mary is researching the demographics of the customers of a certain clothing store. She counted the number of customers who visited the store over the course of a month, and found out how many of the customers were high school students. Her collected data is in the table below.

Week
1
2
3
4
Customers
2,848
3,141
3,861
3,911
Students
2,033
1,937
2,076
1,721

Mary predicts that the store will see 4,238 customers next week. Approximately how many high school students should the store expect next week?
a.
1,865
b.
2,392
c.
2,446
d.
3,025

Answer 1

Total students = 2033+1937+2076+1721 = 7767
Total customers = 2848+3141+3861+3911 = 13761
Fraction who are students ≈ 7767/13761 ≈ 0.5646
Predicted students ≈ 0.5646 × 4238 ≈ 2392

Answer: b. 2,392