Posted by **jake** on Thursday, April 9, 2009 at 5:58pm.

Suppose x is a random variable with mean and standard deviation. If a large number of trials is observed, at least what percentage of these values is expected to lie beween mean-2(standard deviation) and mean + 2(standard deviation)

could someone help me i'm so lost? thank you sooooo much!!!

## Answer this Question

## Related Questions

- STATISTICS - Consider a binomial random variable where the number of trials is ...
- Statistics - 1) A Motor Company has purchased steel parts from a supplier for ...
- Math - Random variables X and Y are both normally distributed with mean 100 and ...
- statistics - A specific study found that the average number of doctor visits per...
- statistics - Given a distribution with mean X and standard deviation S, answer ...
- Statistics - Given that x is a normally distributed random variable with a mean ...
- Math (Statistic) - Considered the sampling distribution of a sample mean ...
- statistics - A specific study found that the average number of doctor visits per...
- Stats - The random variable U has mean 10 and standard deviation 5.The random ...
- adult education - The lifetimes of lightbulbs of a particular type are normally ...

More Related Questions