Question 1201961: Suppose x has a normal distribution with mean μ = 130 and standard deviation σ = 12. What is the probability that x is less than 146?
Answer by ikleyn(52776)   (Show Source):
You can put this solution on YOUR website! .
You can use standard calculator TI-83 or TI-84 with its standard function normalcdf
(= normal cumulative distribution function)
z1 z2 mean σ <<<---=== formatting pattern
p = normalcdf(-9999, 146, 130, 12).
Alternatively, you may use this online free of charge calculator
https://onlinestatbook.com/2/calculators/normal_dist.html
The ANSWER is 0.9088.
Solved.
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If you are a beginner student, I recommend this online calculator (my preferable).
With it, you will get the result quickly and will learn the subject in 5 minutes to complete understanding.
If in the class they require using standard calculator, you can return to it
after playing with the online calculator.
It is really effective way to learn the subject.
I do not know more effective way.
Happy learning ( ! )
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