SOLUTION: I need your assistant please help thank you in advance An quiz test has a mean of 45 and standard deviation of 15. Find the corresponding z scores for: - a quiz score of 29

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Question 259799: I need your assistant please help thank you in advance
An quiz test has a mean of 45 and standard deviation of 15. Find the corresponding z scores for:
- a quiz score of 29
- a quiz score of 25
Please !!!!!!!!!!!!!!!!!!!!!!!!!!!! I'm really not sure
Found 2 solutions by richwmiller, Fombitz:
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
Sorry my assistant (noun meaning helper) isn't available. Perhaps I could offer my assistance (noun meaning help).

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
My assistant is busy right now but maybe I can help... or did you mean assistance??
M=Mean=45
S=Sigma=15
In general,
z=%28X-M%29%2FS, where X is your raw data.
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X=29
+z=%2829-45%29%2F15=+-1.067
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+X=25
+z=%2825-45%29%2F15=-1.333
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Pretty straightforward, yes?
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How about a quiz score of 47 and a quiz score of 40.
What would be the z scores for those?
When you reply include your answers.