Thursday

August 28, 2014

August 28, 2014

Posted by **Pacifico** on Friday, March 19, 2010 at 3:53pm.

A. 2.8 minutes

B. 3.2 minutes

C. 3.4 minutes

D. 4.2 minutes

- Statistics -
**bobpursley**, Friday, March 19, 2010 at 4:38pm - Statistics -
**PsyDAG**, Saturday, March 20, 2010 at 12:20pmWithout that site, you can still figure it out.

Z = (x - mean)/standard deviation

In the back of your text, there is a table labeled something like "areas under normal distribution." Find that percentage in the table to determine your Z score. Put the values in the above equation and solve.

I hope this helps a little more.

- Statistics -
**Pacifico**, Monday, March 22, 2010 at 4:12pmThank you for your help bobpursley and PsyDAG.

I believe the answer is 2.8 minutes. However, the wording of the question using 'exceed' is confusing to me. How do you confirm it is indeed 2.8 minutes and not 4.2 minutes.

Thanks again.

**Related Questions**

Statistics - The length of time it takes college students to find a parking spot...

Math for educators - The length of time it takes college students to find a ...

statistics - If we know that the length of time it takes an MBA student to find ...

statistics - Assume that it takes a college student an average of 5 minutes to ...

Math - Assume that it takes a college student an average of 5 minutes to find a ...

math 540 - suppose it takes a college student an average of 5 minutes to find a ...

Calculus - a college is planning to construct a new parking lot. the parking lot...

Calculus - a college is planning to construct a new parking lot. the parking lot...

Geometry - Jason wants to walk the shortest distance to get from the parking lot...

geometry - A parking lot has seventy-three parking spaces numbered from 1 to 73...