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z-score and normal distribution

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Scores on an exam for entering a private school are normally distributed, with a mean of 79and a standard deviation of 5. To be eligible to enter, a person must score in the top 10%. What is the lowest score you can earn and still be eligible to enter? Please show all work and make the final solution clear.

Arnold earned an 85 on his stats test and 80 on his law test. In the stats class the mean score was 75 with standard deviation of 16. In the law class the mean score was 72 with standard deviation of 15.

Convert each score to a standard score (Z score)

Which score was the higher with respect to the rest of the class? Show your work and explain your answer.

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Scores on an exam for entering a private school are normally distributed, with a mean of 79and a standard deviation of 5. To be eligible to enter, a person must score in the top 10%. What is the lowest ...

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