Wednesday

March 4, 2015

March 4, 2015

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 - 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 ...

Math Statistics - 5. Students in an introductory statistics class were asked to ...

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

statistics (7) - The average cost per night of a hotel room in New York City is...

statistics - The average cost per night of a hotel room in New York City is $273...

statistics - A consumer magazine has contacted a simple random sample of 33 ...

Statistics - This is my first stats class and I don't know how to do this, could...

Statistics (2 mc probs) - I have the following two multiple choice questions ...