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1. Find the z score such that the 45% of observations in a standard normal distribution are greater than z. 2. The scores of students

1. Find the z score such that the 45% of observations in a standard normal distribution are greater than z.

2. The scores of students on the ACT college entrance examination in a recent year had a normal distribution with mean 18 and standard deviation 6. What ACT score should a student have in order to be in the top 10% of test takers? (use 3 decimals)

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