Sunday

March 29, 2015

March 29, 2015

Posted by **dell** on Friday, March 19, 2010 at 12:56am.

- statistics -
**MathGuru**, Friday, March 19, 2010 at 9:29amCI95 = mean + or - 1.96(sd divided by √n)

...where + or - 1.96 represents the 95% confidence interval using a z-table, sd = standard deviation, √ = square root, and n = sample size.

Using your data:

CI95 = 130 + or - 1.96 (12/√36)

I'll let you finish the calculation to determine the interval.

I hope this will help.

**Answer this Question**

**Related Questions**

Statistics - 1. A study of 40 people found that they could do on the average15 ...

Statistics - 1. A study of 40 people found that they could do on the average15 ...

statistics - A sample of 106 golfers showed that their average score on a ...

Statistics - An opinion poll asks a random sample of 100 college seniors how ...

Statistics - A random sample of 384 people in a mid-sized city (city one) ...

Statistics - A random sample of 384 people in a mid-sized city (city one) ...

statistics - The average time in data to process orders received by a metal ...

statistics - A sample of 25 different payroll depts. found that the employees ...

Statistics - A random sample of 90 observations produced a mean that = 25.9 and...

statistics - An automobile shop manager times six employees and found that the ...