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**Unformatted text preview: **0.1736 b. (497-457)/80=0.5 (537-457)/80=1 0.3413-0.1915= 0.1498 c.z=-1.96-1.96=(w-457)/80 W=300.2 d. z=0.475 0.475=(w-457)/80 W=495 7.70 a. P(x<=1600) (1600-1935)/400=-0.55 0.5-0.2088= 0.2912 b. P(2200<=x<=2400) (2200-1935)/400=0.66 (2400-1935)/400=1.16 When 2200, z=0.2454… when 2400, z=0.3770 0.3770-0.24454= 0.1316 c.z=0.845 0.845=(w-1935)/400 W=2273 d. z= 0.255 0.255=(w-1935)/400 W=2037...

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- Winter '08
- Dr.M.Chizari
- Normal Distribution, standard normal table