Friday

February 27, 2015

February 27, 2015

Posted by **kathy** on Monday, July 30, 2012 at 9:31am.

- statistics -
**MathGuru**, Monday, July 30, 2012 at 5:22pmFormula using 99% confidence interval:

CI99 = mean ± [(2.58)(sd/√n)]

Note: Within the brackets is the margin of error.

Your data:

mean = 5.15

sd = 1.68

n = 4400

Plug the values into the formula and calculate.

I hope this will help get you started.

**Answer this Question**

**Related Questions**

math - The National Center for Education surveyed 4400 college graduates about ...

statistics - The Colorado State Legisture wants to estimate the length of timer ...

Statistics - For the most recent seven years, the U.S. Department of Education ...

Statistics - For the most recent seven years, the U.S. Department of Education ...

STAT - 1. In a study of the income of U.S. factory workers, a random sample of ...

Business & Economics - For the most recent seven years, the U.S. Department of ...

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

statistics - An IQ is designed so that the mean is 100 and the standard ...

Statistics - Recently, a university surveyed recent graduates of the English ...

Statistics - a. What is the probability that a sample of 50 male graduates will ...