SOLUTION: show me how to found the mean and standard deviation of four-digit uniformly distributed lottery numbers (0000

SOLUTION: show me how to found the mean and standard deviation of four-digit uniformly distributed lottery numbers (0000 - 9999)

Question 367420: show me how to found the mean and standard deviation of four-digit uniformly distributed lottery numbers (0000 - 9999)
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
For each four-digit number x, p(x) = . The mean:
+...+

=(1/10000)*(sum of integers from 1 to 9999)
= .
The variance is given by

=
=
=
=
=.
The standard deviation would be the square root of this.
RELATED QUESTIONS
Determine the mean and standard deviation of three-digit uniformly distributed lottery... (answered by stanbon)

how do I work this problem? a nurse studied PSA readings and found the data set to be... (answered by stanbon)

Assume that a set of test scores is normally distributed with a mean of 120 and a... (answered by ikleyn)

Could you please tell me what formula to use to solve this problem? A study found that... (answered by stanbon)

Here is a word problem: In order to guarantee all emergency phone calls are received,... (answered by richwmiller)

How many times will the digit '1' appear if we write all whole numbers from 1 to... (answered by Alan3354,ikleyn)

A psychologist studied self-esteem scores and found the data set to be normally... (answered by stanbon)

Can you please show me how to do these two questions. 1. The time a group of high... (answered by stanbon)

Please help me with this math problem: The mean of a distribution that is approximately... (answered by edjones)