SOLUTION: Every normal model is defined by its parameters: the mean and the standard deviation. For each model describe below, find the missing parameter and draw a picture 1) mean =1250,

Algebra ->  Probability-and-statistics -> SOLUTION: Every normal model is defined by its parameters: the mean and the standard deviation. For each model describe below, find the missing parameter and draw a picture 1) mean =1250,      Log On


   

Question 1049554: Every normal model is defined by its parameters: the mean and the standard deviation. For each model describe below, find the missing parameter and draw a picture
1) mean =1250, 35%below 1200, find standard deviation
b) Draw and show the rule of 3 with the parameter above
c) standard deviation =0.5, 72% above 10.0 find the mean
d) mean =0.64, 32% above 0.70, find standard deviation
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
Need to Know
z+=blue+%28x+-+mu%29%2Fblue%28sigma%29
a) u = 1250 & 35% below 1200
find σ
z = invNorm(.35) = -.3853
σ = (1200 - 1250)/-.3853 = 129.6
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c) x = 10
z = invNorm(.28) Below
find μ
μ = 10 - σ*z
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d) x = .7, μ = .64
find σ
z = invNorm(.68) Below
σ = (.7-.64)/z