Wednesday

April 16, 2014

April 16, 2014

Posted by **Brian** on Wednesday, August 1, 2012 at 9:10pm.

I know u: 3.12, sx: .09, n:48, c:.95

What is the formula I use to find the answer? Can anyone please leave a step by step on how to do it so I can learn and do other problems?

- Statistics -
**MathGuru**, Friday, August 3, 2012 at 6:48pmFormula:

CI95 = mean ± 1.96(sd/√n)

...where ± 1.96 represents the 95% interval using a z-table; sd = standard deviation; n = sample size

Your data:

mean = 3.12

sd = .09

n = 48

Plug the values into the formula and determine the interval.

I hope this will help get you started.

**Related Questions**

Math - How can you classify the 2 examples that you gave in part c? Is it: ...

Statistics - Suppose that an automobile parts wholesaler claims that .5 percent ...

statistics help please - For a random sample of 10 men, the mean head ...

statistics - 2. Assume that the population proportion of adults having a college...

statistics - The number of defects in a random sample of 200 parts produced by a...

Statistics - A population has a mean of 200 and standard deviation of 50 and ...

Statistics - Select a random sample of 30 student responses to question 6, "How ...

Statistics - Select a random sample of 30 student responses to question 6, "How ...

statistics - Assume we draw a simple random sample from a population having a ...

Statistics - A study in a particular state found that only 5% of the voters have...