Question 1150436
i) z = (600-480)/160 = 0.75
From z-table, P(>Shs.600) = 1 - 0.7734 = 0.2266
ii) z = (400-480)/160 = -0.5
Using previous answer and area for z = -0.5 (0.3085), P(Shs.400<x<Shs.600) = 0.7734 - 0.3085 = 0.4649
iii) z = (240-480)/160 = -1.5
z = (360-480)/160) = -0.75
P(Shs.240<x<Shs.360) = 0.2266 - 0.0668 = .1598