On a university entrance exam, the scores are normally distributed. The mean is 184 and the standard deviation is 15. a) If Rob scores 200, in what percentile is he? b) If Skyler scores 160, in what percentile is she?

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Q: The mean of the following data is 70. Find x:  47,56,x,79,86

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Q: 2. If y = XB + E,y= 1 8 -3 0 X= a. Find XX,(XX)-1,xy,yy. [1 2 10 1-4 3 【 1 ¹1 [ B = E2 E3 LE4.

A: Data given

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