Monday

October 20, 2014

October 20, 2014

Posted by **HELP** on Sunday, March 7, 2010 at 9:24pm.

- college STATISTICS -
**MathGuru**, Sunday, March 7, 2010 at 10:04pmFormula:

CI99 = mean + or - 2.575 (sd/√n)

Substitute what is given into the formula:

CI99 = 160 + or - 2.575 (40/√80)

I'll let you take it from here. Once you have the interval calculated, you should be able to answer the question in the problem.

I hope this will help get you started.

- college STATISTICS -
**Mary**, Monday, March 8, 2010 at 8:16pmWhat does "or" mean?

**Answer this Question**

**Related Questions**

umuc - sample of 80 people randomly asked in casino shows that average lost per ...

statistics - The income of college students is normally distributed with a mean ...

statistics - ok i was given a set of data asked to create a graph of my choice ...

Statistics - 28. A group of statistics students decided to conduct a survey at ...

statistics - Your samle is normally distributed with a mean age of 57. The ...

statistics - A specific study found that the average number of doctor visits per...

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

statistics - A specific study found that the average number of doctor visits per...

Statistics: Sample Size, Variance and Standard Dev - Sample Size, Variance and ...

Statistics - An organization is studying whether women have caught up to men in ...