Friday

September 19, 2014

September 19, 2014

Posted by **Jake** on Wednesday, June 2, 2010 at 5:59pm.

X P(X)

0 0.80

1 0.15

2 0.05

What is the expected mean (average) number of accidents that occur each day

- STATISTICS -
**MathGuru**, Friday, June 4, 2010 at 7:05pmTo find the mean:

SUM [x * P(x)]

Multiply each x by its respective probability P(x). Add together for a total. This will be your mean.

To find variance:

SUM [x^2 * P(x)] - mean^2

Square each x. Multiply each squared x by its respective probability P(x). Add together for a total. Square the mean. Subtract the squared mean from the total. This will be your variance.

To find standard deviation:

Take the square root of the variance.

Hopefully, this information will help you with problems of this type.

- STATISTICS -
**blueyeshadow**, Monday, January 17, 2011 at 8:11pmanswer is 0.33

- STATISTICS -
**dennis**, Wednesday, December 19, 2012 at 2:42pm1 to 6264. find the probability of selecting a number that is not divisible by 1000

**Answer this Question**

**Related Questions**

statistics - A particular report included the following table classifying 711 ...

math - 1.Thompson Security has been hired to determine the number of visitors at...

statistics - What tools can be used to collect data? What are some of the issues...

Statistics - 2.) Car insurance companies assume that the longer a person has ...

probability - There is a .97 chance that no accident will occur during any ...

Stats - A particular report included the following table classifying 713 fatal ...

statistics - Suppose that the number of accidents occurring in an industrial ...

Statistics - Research design is an area where researchers collect various data ...

Statistics - Before i state my question I would like to note that I have to do a...

Advanced algebra - The number of freshmen entering college in a certain year is ...