Thursday

September 18, 2014

September 18, 2014

Posted by **Barbara** on Sunday, November 21, 2010 at 3:44pm.

What is the operating cost for the lowest 5 percent of the airplanes?

- statistics -
**Joe**, Sunday, November 21, 2010 at 6:45pmAccording to the standard bell curve and the empirical rule, the lowest 5% would be 2 standard deviations below the mean making the operating cost of the lowest 5% of airplanes equal to $1785

- statistics correction -
**PsyDAG**, Monday, November 22, 2010 at 8:32amZ = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the Z score related to that proportion.

For the lowest 5%, you need a Z score of -1.645.

Insert the values in the above equation to solve for the score.

- statistics -
**m**, Thursday, April 18, 2013 at 9:30pm.59

**Answer this Question**

**Related Questions**

MATH - Which of the following normal distributions has the smallest spread? A. A...

Math (Statistic) - Considered the sampling distribution of a sample mean ...

statistics - A sample of 25 men has a mean weight of 65kg with standard ...

statistics - Among coffee drinkers, men drink a mean of 2.8 cups per day with a ...

Statistics - The distribution of IQ scores is a nonstandard normal distribution ...

Statistics - Information from the American Institute of Insurance indicates the...

statistics - The respiratory rate per minute in newborns varies according to a ...

statistics - Alice has measured the hemoglobin levels of 200 people. If the data...

Statistics - I have a problem I need some help on. I have answered parts. Any ...

Statistics - Is it from Normal Distribution - I think I know how to answer the ...