anonymous one year ago It is found that the number of raisins in a box of popular cereal is normally distributed, with a mean of 133 raisins per box and standard deviation of 10 rasins. My box has 157 rasins. What is the z-score for this box of cereal?

1. anonymous

do you know the Standardization equation?

2. anonymous

yes it is in my notes!

3. anonymous

if just get confused as to where each number needs plugged in

4. anonymous

ok let me write it out

5. anonymous

$Z=\frac{ \mu-x }{\sigma }$

6. anonymous

thank you

7. anonymous

so µ= 133 because µ is the mean. x= 157 because it is the x value you are looking for. and sigma ( the funny letter under the fraction) is 10 because the standard deviation is 10

8. anonymous

then plug all those into the equation and you should get a positive number

9. anonymous

like 2.4 or somthing i'm just guessing

10. anonymous

cool?

11. anonymous

great, thanks again!