Posted by **Jackie** on Monday, April 15, 2013 at 1:56am.

For a Normal distribution with mean, mu=2, and standard deviation, sigma = 4,

70% of all observations have values between x and y . (Round to 4 decimal places.)

- Math -
**Steve**, Monday, April 15, 2013 at 11:39am
Consult your standard Z table. 35% of all observations occur between 0 and 1.04σ. So, 70% occur between -1.04σ and 1.04σ.

So, that means that the actual values occur in

2-1.04(4) <= x <= 2+1.04(4)

-2.16 <= x <= 6.16

## Answer this Question

## Related Questions

- Statistics - Information from the American Institute of Insurance indicates the...
- statistics - A maker of tires for cars has a multitude of data to support the ...
- statistics - The number of viewers of American Idol has a mean of 21 million ...
- stats - A sample of 12 observations is selected from a normal population for ...
- Stats - Exercise 6-8 The Downtown Parking Authority of Tampa, Florida, reported ...
- prob and stats - The tread lives of the Super Titan radial tires under normal ...
- statistics - Consider a normal distribution with mean 30 and standard deviation ...
- Math check - A random sample of size 26 is to be selected from a population that...
- MATH - Which of the following normal distributions has the smallest spread? A. A...
- Stats Math 3 - Suppose a simple random sample of size n=150 is obtained from a ...

More Related Questions