The SAT scores of a certain population of students are approximately normally distributed with a mean and standard deviation of 1000 and 200 points, respectively. The probability that a student selected at random from the population has an SAT score between 800 and 1200 approximately

Answer 1

Perfect data, one standard of devation below and above.
so appr 68% or prob of .68

confirmed by David's webpage
http://davidmlane.com/hyperstat/z_table.html

fill in the data to see and get .6827

Answer 2

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