Posted by **thelma** on Friday, February 18, 2011 at 11:41pm.

if a data se has a mean of 10.0 seconds & a standard deviation of 2.0 seconds, what is the z score corresponding to the time of 4.0 seconds?

- statistics -
**Reiny**, Saturday, February 19, 2011 at 10:44am
z-score(4s) = (4-10)/2

- statistics -
**PsyDAG**, Saturday, February 19, 2011 at 10:45am
Z = (score-mean)/SD

Insert values and calculate.

- statistics -
**Mia**, Saturday, July 23, 2011 at 8:28pm
A particular statistician knows that approximately 35% of people do not tell the truth when polled. If 400 people were polled in a survey, how many would be expected to answer before someone answers untruthfully?

## Answer This Question

## Related Questions

- statistics - If a data set has a mean of 10.0 seconds and a standard deviation ...
- Statistics - If a completion time for a task is normally distributed with a mean...
- Math3( Please Help Assignment Due) - 80 U2 songs (in seconds) were selected at ...
- statistics - A sample of 16 ATM transactions shows a mean transaction time of 67...
- Statistics - New data is added to change the mean time to 6 mninutes and 10 ...
- Math(Please Help Assignment Due Tomorrow) - From the length(in seconds) of 80 ...
- stats - a sample of 16 atm transactions shows a mean transaction time of 67 ...
- statistics - According to a bank, the time taken by its customers to use cash ...
- Statistics - A song must be n longer than 3 minutes and 30 seconds, or (210 ...
- Statistics - A song must be n longer than 3 minutes and 30 seconds, or (210 ...

More Related Questions