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 2 years ago
A Math test has a mean of 39 and standard deviation of 18.0. Find the corresponding z scores for:
I. a test score of 31
II. a test score of 100
Please show all of your work
 2 years ago
A Math test has a mean of 39 and standard deviation of 18.0. Find the corresponding z scores for: I. a test score of 31 II. a test score of 100 Please show all of your work

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sirm3d
 2 years ago
Best ResponseYou've already chosen the best response.1the z score formula is \[z=\frac{ obsv  mean }{ std.dev. }\] i'll leave the computation to you. post your answers here.

DarkendSinz30
 2 years ago
Best ResponseYou've already chosen the best response.0z=3139/18.0 correct?

DarkendSinz30
 2 years ago
Best ResponseYou've already chosen the best response.0z=10039/18.0 = 3.4

DarkendSinz30
 2 years ago
Best ResponseYou've already chosen the best response.0is this right so far?

sirm3d
 2 years ago
Best ResponseYou've already chosen the best response.1there is a negative sign

sirm3d
 2 years ago
Best ResponseYou've already chosen the best response.1I. z = 0.44 II. z = 3.4

DarkendSinz30
 2 years ago
Best ResponseYou've already chosen the best response.0okay so I was on the right track then just forgot the negative sign

sirm3d
 2 years ago
Best ResponseYou've already chosen the best response.1just be careful with the signs.

DarkendSinz30
 2 years ago
Best ResponseYou've already chosen the best response.0Thank you so much for the help.
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