Probability - Standard Normal Curve
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1. A college requires applicants to have an ACT score in the top 15 % of all test scores . The ACT scores are normally distributed , with a mean of 17 and a standard deviation of 3.24 . Find the lowest test score that a student could get and still meet the college 's requirement?
2.With the conditions of problem 1, if 20 students are selected , what is the probability that the mean of their scores is greater than 18?
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(1) = 17, = 3.24
To qualify a student needs to be in the top 15%.
This means, the ...
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