3. The average score on one of your Math exams was 75 with a standard deviation of 20. Assuming the scores are normally distributed. a) If your corresponding z-score was 1.5, what is your...

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Extracted text: 3. The average score on one of your Math exams was 75 with a standard deviation of 20. Assuming the scores are normally distributed. a) If your corresponding z-score was 1.5, what is your corresponding raw score and percentile rank? b) If the z-score associated with a given raw score is equal to zero, what does this imply? c) What percentage of the students got a score above 90? d) What percentage of the students got a score less than 50? e) If the top 5% are given A's in that examination, what is the lowest raw score to get an A?