STATISTICS: "When you don't have a normal table", there is an equation that you can use to get proportions. I have it written in the attachment, but I am not 100% what it is. Is it 0.5 + z(4.4-z), all divided by 10?

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anonymous · Answer

attachment

anonymous · Answer

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phi · Answer

@QRAwarrior you are a bit out of control, don't you think?
As for your question
but I am not 100% what it is. Is it 0.5 + z(4.4-z), all divided by 10? 

They give two different examples where they use the approximation.  Did you try the example?   It shows that the formula is  0.5 + z*0.1*(4.4-z) and that it has about two digits of accuracy within the stated standard deviations.

anonymous · Answer

For the Roma tomatoes, I computed what is written (the calculation with z = 1.36) and I am getting 0.46344

anonymous · Answer

Assuming that formula is:

anonymous · Answer

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