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    Statistics - Probability Distribution and Mean Determination

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    Incubated time for black chicks is distributed with a mean of 21days and standard deviation of 1 day.using what is given, If 1000 eggs are being incubated how many chicks do we expect to hatch
    a) in 19-23 days, in 20 to 22 dayd
    b) in 21 days or fewer
    d) in 18 to 24 days assuming all eggs hatched.
    This is what is given:u-3(mean)=2.35%
    u-2(mean)=13.5%
    standard deviation(u)-mean=34%
    standard deviation.=34%
    u+(mean)=13.5%
    u+2(mean)=2.35%
    u+3(mean)=2.35%
    and u-mean, u, u+ mean =68%
    and u-2(mean, u-mean, u, u-mean, u+2(mean)=95%
    u-3(mean), u-2(mean), u-mean, u, u+mean, u+2(mean), u+3(mean)=99.7%

    © BrainMass Inc. brainmass.com June 3, 2020, 9:34 pm ad1c9bdddf
    https://brainmass.com/statistics/probability/statistics-probability-distribution-mean-determination-188575

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     = 21,  = 1
    z = (x - )/
    (a) z = (19 - 21)/1 = -2 and z = (23 - 21)/1 = 2
    Number of chicks ...

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