Answer:
-1.75.
Step-by-step explanation:
The z-score = (n - m) / d where n is the value (13) m = mean and d = standard deviation.
= (13 - 20) / 4
= -1.75 (answer)
4 es esa ????k nose
the second one
i did it in my head and double checked :)
-1\4
find the gradient of the line
