Question 412037
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Hi
Homer scored 76 on his math test.
The class average was 61, the median was 66, and the variance was 25. 
*Note: {{{z = blue(x - mu)/blue(sigma)}}} average(sum of scores/number of scores) and mean the same.
   z = (76-61 / 25 = 15/25 = 3/5 = .6
  P(z < .6) = .72575  
1) Homers Percentile rank is 72.575%
2) What percent of the people taking this test scored better than homer? 27.425%