Posted by **erica** on Friday, May 11, 2012 at 12:06pm.

a mean score on a standardized test is 50 with a standard deviation of 10. What are the following:

1. what scores fall between -1 and +1 standard deviation?

2. what percent of all scores fall between -1 and +1 standard deviation?

3. what score falls at +2 standard deviations?

4. What percentage of scores falls between +1 and +2 standard deviations?

## Answer this Question

## Related Questions

- MATH - A mean score on a standardized test is 50 with a standard deviation of 10...
- statistics - 2. Why is it important to know the mean and standard deviation for ...
- Stastics - When we convert x-value to z- score and use Standard Normal ...
- statistics - A standardized third grade reading test, called the We Can Read ...
- Statistics - The distribution of IQ scores is a nonstandard normal distribution ...
- Statistics - Students were given an exam with 300 multiple-choice questions. The...
- Foundations of Measurement - Approximately 400,000 students took the GRE in 2009...
- statistics - Three students take equivalent stress tests. Which is the highest ...
- statistics - Three students take equivalent stress tests. Which is the highest ...
- Statistics - The distribution of scores on a test is mound-shaped and symmetric ...

More Related Questions