anonymous
  • anonymous
Need Help!! Please!! Medal!!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
The Graduate Record Examinations are widely used to help predict the performance of applicants to graduate schools. The range of possible scores on a GRE is 200 to 900. The psychology department at a university finds that the scores of its applicants on the quantitative GRE are approximately normal with mean = 544 and standard deviation = 103. Use your calculator or computer to find the relative frequency of applicants whose score X satisfies the following conditions: (As part of your answer, draw a standard normal curve and shade the area under the curve that represented the answer to the question; do this on scratch paper and provide a one-sentence description for the assignment). X < 500
anonymous
  • anonymous
Please tag anyone you know that is good at math!!
anonymous
  • anonymous
That is not the same question as mine. Can you just tag some people that are good at math please. @tiff9702

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anonymous
  • anonymous
@ganeshie8 @dan815 @Michele_Laino @iambatman @pooja195 @Hero
Michele_Laino
  • Michele_Laino
here is the situation described by your exercise: |dw:1441305133103:dw|
anonymous
  • anonymous
Okay. So how would I properly describe it though? @Michele_Laino
Michele_Laino
  • Michele_Laino
now we have to compute the subsequent quantity: \[\Large t = \frac{{544 - 500}}{{103}} = ...?\]
Michele_Laino
  • Michele_Laino
yes! I think that you have to describe the steps in order to get my drawing above
anonymous
  • anonymous
So the 1st step is to compute the subsequent quantity?
anonymous
  • anonymous
I got 0.427
Michele_Laino
  • Michele_Laino
ok! we can round off that result to 0.43
Michele_Laino
  • Michele_Laino
now we have to use the table of the "erf" function, and we get that the relative frequency is: \[\Large r = 50 - 16.28 = ...\% \]
anonymous
  • anonymous
So would I write that the 1st step is to compute the subsequent quantity?
anonymous
  • anonymous
Okay I got 33.72.
Michele_Laino
  • Michele_Laino
yes! the first step is to compute the distance 0f 500 from the mean 544 in units of the standard deviation and yes! that percentage is the requested relative frequency
anonymous
  • anonymous
Okay I got it so far :D
Michele_Laino
  • Michele_Laino
:)
anonymous
  • anonymous
Is that all to get the graph? @Michele_Laino
anonymous
  • anonymous
Wow! You make everything seem so easy! Thank you so much!!! @Michele_Laino
Michele_Laino
  • Michele_Laino
yes! my graph is all what we can do :)
Michele_Laino
  • Michele_Laino
:)
anonymous
  • anonymous
Thank You!
Michele_Laino
  • Michele_Laino
thanks! :) :)

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