Scores on the SAT form a normal distribution with Mean=500 and SD=100. a) What is the minimum score necessary to be in the top 15% of the SAT distribution? b) What are the z- scores that define the middle 80% of the distribution of SAT scores (372 and 628).

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2. Scores on the SAT form a normal distribution with Mean=500 and SD=100.
a) What is the minimum score necessary to be in the top 15% of the SAT
distribution?
b) What are the z- scores that define the middle 80% of the distribution of SAT
scores (372 and 628).
Transcribed Image Text:2. Scores on the SAT form a normal distribution with Mean=500 and SD=100. a) What is the minimum score necessary to be in the top 15% of the SAT distribution? b) What are the z- scores that define the middle 80% of the distribution of SAT scores (372 and 628).
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