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Obtain your current grade in this class (70%) and calculate/find out your percentile ranking. You will...

Obtain your current grade in this class (70%) and calculate/find out your percentile ranking. You will need to convert your grade to z-score in order to find out your percentile ranking. Currently, the average grade for this class is 83.3 and the standard deviation is 6.71. Please show your work/calculation steps.

Math   Statistics-And-Probability   
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Answer #1

X =  your current grade in this class = 70%

your current grade in this class () = 83.3

standard deviation () = 6.71

the z score for your grade is :-

proportion of students below the z score -1.9821 is :-

[ in any blank cell of excel type =NORMSDIST(-1.9821) ]

your percentile ranking is:-

= (0.0237*100)

= 2.37 th

*** if you have any doubt regarding the problem ,please write it in the comment box...if satisfied,please UPVOTE.

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