Wednesday

November 26, 2014

November 26, 2014

Posted by **Tommy** on Thursday, February 7, 2008 at 11:42pm.

a)what proportion of the population have SAT scores above 650?

b)what proportion of of the population have SAT scores below 540?

c)what is the minimum SAT score needed to be in the highest 20% of the population?

d)what SATE scores separates the top 60% from the rest of the distribution?

- statistics -
**PsyDAG**, Friday, February 8, 2008 at 10:43amUse the Z score formula:

Z = (X - ƒÊ)/SD

After finding the appropriate Z scores in a table in the back of your statistics text called something like "areas under the normal distribution," insert that Z value into the formula to find the value of your score.

Some problems need you to determine the Z score before consulting this table to get a proprotion.

I hope this helps. Thanks for asking.

**Answer this Question**

**Related Questions**

statistics - The distribution of scores is normal with a ì = 100 and ó =15. What...

stats - SAT math scores approx. follow a normal distribution, with mean 500 and ...

statistics - (population) A normal distribution has a mean of 80 and a std dev ...

Statistics - For a normal distribution with a mean of m = 80 and a standard ...

Statistics - Among first year students at a certain university, scores on the ...

statistics - Sat scores l around the nation tend to have a mean score around 500...

statistics/please check calculations - questions reads as follows: sat scores ...

statistics - sat scores around the nation tend to have a mean score of about 500...

statistics - sat scores around the nation tend to have a mean score around 500, ...

The SAT, - I'm a 7th grader that took the SAT. These were my scores: Critical ...