Thursday

July 31, 2014

July 31, 2014

Posted by **Darren** on Sunday, March 3, 2013 at 1:16pm.

- statistics -
**Dr. Jane**, Sunday, March 3, 2013 at 1:24pmYou need to find the z-score

(40 - 50)/10 = z

(60 - 50)/10 = z

So, you are looking for -1 and +1 standard deviations.

Find the area between -1 and +1 standard deviation by using a z-table or else by using the 65.. etc, rule.

**Related Questions**

statistics - In a population of normally distributed aptitude scores of 1000 ...

Math (Statistics) - The SAT scores of a certain population of students are ...

statistics - How do we compute sample size fluctuations? Suppose we have a ...

college math - Math homework please help!! 2. Suppose that people’s weights are ...

Statistics - Are these statements true or false? 1. The sample mean, the sample ...

Statistics - An admissions director wants to estimate the mean age of all ...

statistics - SAT I scores around the nation tend to have a mean scale score ...

Statistics - SAT I scores around the nation tend to have a mean scale score ...

Statistics - A normally distributed population has a mean of 40 and a standard ...

Statistics - Scores on the Stanford-Binet Intelligence scale have a mean of 100 ...