anonymous
  • anonymous
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?
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
do you know the Standardization equation?
anonymous
  • anonymous
yes it is in my notes!
anonymous
  • anonymous
if just get confused as to where each number needs plugged in

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anonymous
  • anonymous
ok let me write it out
anonymous
  • anonymous
\[Z=\frac{ \mu-x }{\sigma }\]
anonymous
  • anonymous
thank you
anonymous
  • 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
anonymous
  • anonymous
then plug all those into the equation and you should get a positive number
anonymous
  • anonymous
like 2.4 or somthing i'm just guessing
anonymous
  • anonymous
cool?
anonymous
  • anonymous
great, thanks again!

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