
(1)被调查者中,不吸烟者赞成在餐厅彻底禁烟的人数是______;
(2)被调查者中,希望在餐厅设立吸烟室的人数是_______;
(3)求被调查者中赞成在餐厅彻底禁烟的频率;
(4)贵阳市现有人口约为370万,根据图中的信息估计贵阳市现有人口中赞成在餐厅彻底禁烟的人数.

同类型试题

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2


y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

