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The 2000 chickens at Ronalds farm have a mean weight of 1000g with a standard deviation of 50g. Find the number of chickens
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Answer #1

μ= 1000, σ=50. n= 2000

Proportion of chickens that weight between 900g and 1500g, P(900<X<1500) =

900 1000 50 1500 1000 50 = P(-2 < Z < 10) P(Z < 10)-P(Z <-2) Using standard normal table 1-0.0228 = 0.9772

Number of chickens between 900g and 1500g = 2000*0.9772 = 1954.4 = 1954

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