Scores on the act test have a distribution that is, Ask an Expert

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Scores on the ACT test have a distribution that is approximately normal with mean 21.1 and standard deviation 5.1.

What is the probability that a student chosen at random will have an ACT score greater than 30? (Round z-scores to the nearest one-hundredth)

Answer

	a.	0.2843
	b.	0.0401
	c.	0.9599
	d.	Less than 0.0001

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Statistics and Probability, Statistics

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