Answer:
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