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In 2009, the mean mathematics score was 21 with a standard deviation of 5.3 for the ACT mathematics section. ReferenceReference Draw the normal curve in your notes, label the axis axes as shown.
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ACT scores were approximately normal in 2009 with = 21 and = 5.3. 1. What percent scored between 15.7 and 26.3?
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ACT scores were approximately normal in 2009 with = 21 and = 5.3. What percent scored between 15.7 and 26.3? 68%
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ACT scores were approximately normal in 2009 with = 21 and = 5.3. 2. What percent scored between 10.4 and 36.9?
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ACT scores were approximately normal in 2009 with = 21 and = 5.3. What percent scored between 10.4 and 36.9? 97.35%
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ACT scores were approximately normal in 2009 with = 21 and = 5.3. 4. What percent scored above 26.3?
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ACT scores were approximately normal in 2009 with = 21 and = 5.3. What percent scored above 26.3? 16%
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ACT scores were approximately normal in 2009 with = 21 and = 5.3. 5. What percent scored below 5.1?
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ACT scores were approximately normal in 2009 with = 21 and = 5.3. What percent scored below 5.1? 0.15%
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ACT scores were approximately normal in 2009 with = 21 and = 5.3. 6. If on scores a 28 on the ACT, what is their z-score?
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ACT scores were approximately normal in 2009 with = 21 and = 5.3. 6. If on scores a 28 on the ACT, what is their z-score?
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In 2009, the mean mathematics score on the SAT was 515 with a standard deviation of 116. Reference Reference 7. Draw the normal curve in your notes, label the axis similar like I did for the ACT distribution.
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In 2009, the mean mathematics score on the SAT was 515 with a standard deviation of 116. Reference Reference Draw the normal curve in your notes, label the axis similar to the ACT distribution. ANSWER
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In 2009, the mean mathematics score on the SAT was 515 with a standard deviation of 116. Reference Reference 8. If one’s score on the SAT math section was 678, calculate their z-score.
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In 2009, the mean mathematics score on the SAT was 515 with a standard deviation of 116. Reference Reference If one’s score on the SAT math section was 678, calculate their z-score. ANSWER ABOVE
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In 2009, the mean mathematics score was 21 with a standard deviation of 5.3 for the ACT mathematics section. ReferenceReference In 2009, the mean mathematics score on the SAT was 515 with a standard deviation of 116. 9. Was a score of 28 on the ACT mathematics section better than a score of 678 on the SAT mathematics sections? Explain.
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Answer: Since the ACT mathematics z-score was 1.32 which is lower than the SAT mathematics score of 1.405, a score of 28 is not better on the ACT math compared to a score of 678 on the SAT math section. The z-score for the SAT math section was higher than the z-score for the ACT math, the SAT score is better.
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