The mean of a set of data is 5.73 and its standard deviation is 3.44. find the z score for a value of 13.87

z-score = 2.366

Step-by-step explanation:

Given:  mean of a set of data is u =  5.73

             standard deviation s = 3.44

             value or score x= 13.87

To find : z-score

Formula used: Z= (score - mean)/ standard deviation

Solution: Z= (x-u) / s

               Z= (13.87 - 5.73) / 3.44

               Z=8.14 / 3.44

               Z= 2.366

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