duongsuga93 duongsuga93
  • 16-01-2024
  • Mathematics
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Bài 5. Giám đốc thương mại của một hãng đồ chơi muốn nghiên cứu ý kiến khách hàng về một loại đồ chơi mới ở 3 vùng. Kết quả điều tra như sau:

Vùng / ý kiến

Không biết gì

về đồ chơi

Giá đồ chơi

vừa phải

Giá cao

1

64

28

106

2

84

42

76

3

56

14

130

Respuesta :

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