Friday

December 26, 2014

December 26, 2014

Posted by **Shane** on Thursday, February 7, 2008 at 10:22pm.

A normal distribution has a mean of 80 and a std dev of 20. For each of the following scores, indicate wheter the tail of the distribution is located to the right or left of the score, and find the proportion of the distribution located in the tail.

a.X=85, B.X=92, C. X=70 D. X=-64

- statistics -
**PsyDAG**, Friday, February 8, 2008 at 10:50amIf the score is above the mean (ƒÊ), the tail will be to the right — and to the left, if below the mean.

The exact proportions can be found by using the Z score formula

Z = (x - ƒÊ)/SD

and looking those Z values up in a table in the back of your statistics text called something like "areas under the normal distribution."

I hope this helps. Thanks for asking.

**Answer this Question**

**Related Questions**

statistics - The distribution of scores on the SAT is approx. normal with mu= ...

Statistics - Which of the following statements are correct? 1.A normal ...

statistics - Which of the following statements are correct? a. a normal ...

Statistics - 1. Which of the following statements are correct? a. A normal ...

statistics - which of the following statements are correct? a. a normal ...

statistics - Which of the following statements are correct? a. A normal ...

statistic - 1. Which of the following statements are correct? a. A normal ...

statistics - A normal distribution has a mean of 20 and a standard deviation of ...

statistics - 1. Which of the following statements are correct? a. A normal ...

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