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17. a) State the mean and standard deviation of the standard normal curve. b) Find the z-score for which 95% of the distribution's area lies

17. a) State the mean and standard deviation of the standard normal curve.

b) Find the z-score for which 95% of the distribution's area lies between -z and z.

c) Extending the meaning in part b, only 2.5% of z-scores would lie above ________.

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