Posted by **emily** on Wednesday, September 10, 2008 at 7:05pm.

probability and statistics

a z score is z = x - xbar divided by s

which is standard deviation

s = 6.36

x = ?

xbar = 54.8

the x is all the data sub. from 54.8 individually which i came up with 1.2 and divided it by 6.36 and the number is .1886.....and the answer in the back of the book is -2.05 so my answer is wrong do you think you could the answer with this information?

- statistics -
**PsyDAG**, Thursday, September 11, 2008 at 4:28am
First, it is better to title your post with the subject area, in this case, statistics.

"xbar" = mean

You need either the value for Z or x to solve your equation. From your description, I'm not quite sure what you did.

However, Z = .1886 is very close to the mean, less than a standard deviation away.

I hope this helps. Thanks for asking.

## Answer This Question

## Related Questions

- stats - To estimate the mean score of those who took the Medical College ...
- statistics - The number of accidents per week at a hazardous intersection ...
- statistics - population with a mean of 53.1 and standard deviation of 4.43 ...
- Statistics/probability - The random variable X has a binomial distribution with ...
- statistics - Consider a sample mean (xbar) of 46 caluclated from a sample of ...
- statistics - consider a sample mean of xbar of 46 calculated from a sample of ...
- Biostats - If the average (xbar) on an assignment in a class was 82% with a ...
- Business statistics - 1(a)Let Y have a binomial distribution with parameters n ...
- Statistics - A survey of community banks asked about the loan to deposit ratio (...
- statistics - Help me! Population of heights of college students is approximately...

More Related Questions