Based on data from ACT in 2008, the average science reasoning test score was 20.8, with a

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Based on data from ACT in 2008, the average science reasoning test score was 20.8, with a standard deviation of 4.6. Assuming that the scores are normally distributed,
a. find the probability that a randomly selected student has a science reasoning ACT score of least 25.
b. find the probability that a randomly selected student has a science reasoning ACT score between 20 and 26.
c. find the probability that a randomly selected student has a science reasoning ACT score less than i6.
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Elementary Statistics

ISBN: 9780538733502

11th Edition

Authors: Robert R. Johnson, Patricia J. Kuby

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