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d2jsp Forums > Off-Topic > General Chat > Homework Help > Easy Z-score Statistic Problems > Paying 100fg Per Problem!!
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Feb 9 2014 01:35pm
Quote (YaJiv @ Feb 9 2014 02:31pm)
you 100% sure?


why dont you just ask them to show their work, and look at their work to see if you agree with it?
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Feb 9 2014 01:40pm
Quote (carteblanche @ Feb 9 2014 02:35pm)
why dont you just ask them to show their work, and look at their work to see if you agree with it?


because I don't know how to do it
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Feb 9 2014 01:41pm
Quote (TritonV8 @ Feb 9 2014 02:31pm)
Depending on how your instructor wants you to round the Z-score values, it'll vary by a percent or 2.
I rounded all Z-values to the hundredth, so that may account for the small margin of difference.
I looked it over again and it should be right in the ballpark of 70%-73%, depending on rounding


those other 2 were off by like 4 percent though

it was an online assignment so it had to be close sorry
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Feb 9 2014 01:41pm
here's how i went about mine:


all Z-score values taken from this table
http://www.regentsprep.org/Regents/math/algtrig/ATS7/ZChart.htm
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Feb 9 2014 01:42pm
guys, just use this: http://sampson.byu.edu/courses/z2p2z-calculator.html it goes up to 6decimals precision :P
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