Mathematics, 23.02.2021 23:10 pineappleliyah3

Can anyone help? 1. A normal distribution of scores has a standard deviation of 10. Find the z-scores corresponding to each of the following values: a) A score that is 20 points above the mean. z=2. b) A score that is 10 points below the mean z= -1. c) A score that is 15 points above the mean z= 1.5 d) A score that is 30 points below the mean z= -3.

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