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3 August, 18:18

The number off standard deviations between a score and the mean score indicated by a z-score. what was Cindy's z-score on the science test

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  1. 3 August, 22:01
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    Z score of 0 gives you the mean for the problem; The mean μ is 70 Now you can use this value of the mean in the definition of z score for the second case and find the standard deviation. Z score is the number of standard deviations away from the mean. Therefore σ = (1) (74-70) = 4.
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