Question

A sample of 3000 observations has a mean of 82 and a a standard deviation of 16.Using the empirical rule, find what percentage of the observations fall in the intervals x= +-25.

Answer 1

Well first you have to think here. Its a simple question you just have to find what numbers lay within range using Empirical rule. Just brush up on terminology and you wont need my help.

Answer 2

what is that? EMPIRICAL RULE

Answer 3

The Empirical Rule is most often used in statistics for forecasting final outcomes. After a standard deviation is calculated, and before exact data can be collected, this rule can be used as a rough estimate as to the outcome of the impending data. This probability can be used in the meantime as gathering appropriate data may be time consuming, or even impossible to obtain.
A statistical rule stating that for a normal distribution, almost all data will fall within three standard deviations of the mean. Broken down, the empirical rule shows that 68% will fall within the first standard deviation, 95% within the first two standard deviations, and 99.7% will fall within the first three standard deviations of the mean.

Also referred to as the Three Sigma Rule, or the 68-95-99.7 Rule.

Answer 4

This should pretty much cover it.

Answer 5

i have read that
but i don't understand anything

Answer 6

Basically you restate everything and write down what falls in a certain percentle.

Answer 7

Youve got to learn or else you dont get anything out of school.

Answer 8

it was'nt discussed

Answer 9

our teacher just gave that . . .
without discussion. .

Answer 10

Well your teacher must have thought it needed no explanation. This is where I usually watch a youtube tutorial so I get a better grasp cause I dont know how else to explain.