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Student Support Forum: 'Normal Distribution continuous random variable, x' topicStudent Support Forum > General > Archives > "Normal Distribution continuous random variable, x"

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Igal
01/26/09 12:05pm

Hi all,
I am completely new to this so please forgive me if this ? has been asked before (I searched but couldn't find the answer to my ?).

How can I use Mathematica to solve the following:

If x is normally distributed with mean = 25.0 and a standard deviation = 5, how can I determine the following

P(x is greater than or equal to 25.0)

I tried using the PDF[NormalDistribution[\[Mu], \[Sigma]], x] function but it just returns the following:

E^(-(1/32) (-25 + (x > 25))^2)/(4 Sqrt[2 \[Pi]])

I know the answer is 0.5 but I want to know how I can go about calculating this using the program.

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Author Date Posted
Normal Distribution continuous random variable, x Igal 01/26/09 12:05pm
Re: Normal Distribution continuous random varia... Kaveh 01/27/09 9:02pm
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