The mean yield for one acre plot is 662 kg with a s.d. 32 kg. Assuming normal distribution, how many one acre plot in a batch of 1000 plots would your expect to have yield between 600 and 750 kg.
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σ = 32 ; μ = 662
z = (x-μ)/32 = 1.19
P(z>1.19) = 0.1170
Number of plots = 0.117*1000 = 117
z = (x-μ)/32 = 1.19
P(z>1.19) = 0.1170
Number of plots = 0.117*1000 = 117
porushmarwaha:
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