Thursday
April 17, 2014

Homework Help: Statistics

Posted by Anonymous on Tuesday, October 9, 2012 at 11:48am.

Given that x is a normally distributed random variable with a mean of 28 and a standard deviation of 7, find the following probability:

P(x<28)

I understand that the means is 28 and the standard deviation is 7. However what I don't understand is how to get the value of x.

Do I subtract 28 from 7 to get 21 and square it for the answer?

or do I use the formula of z= x-mean/standard deviation? and if so how do I work the formula with out the value of x?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

statistics - assume you have a data set from a normally distributed random ...
Statistics - A random variable X is normally distributed with = 60. Convert ...
Statistics - A random variable X is normally distributed with = 60. Convert ...
statistics - the random variable x is normally distributed with a mean of 75 and...
statistics - Let x be a continuous random variable that is normally distributed ...
BUSINESS STATISTICS - The random variable x is normally distributed with mean =1...
BUSINESS STATISTICS - The random variable x is normally distributed with mean =1...
statistics - Let x be a continuous random variable that is normally distributed ...
statistics - Let x be a continuous random variable that is normally distributed ...
statistics - Let X be a continuous random variable that is normally distributed ...

Search
Members