Given:
mean = 16
standard deviation = 12
variance = 144
z = (x - μ) / σ
z = (13 - 16) / 12
z = -3 /12
z = -1/4 or -0.25
To raise a number n to a negative power you simply take the fraction 1/n and raise it to the (positive) power you want.

So 2^-2 is ¼.
I dont know but like mu comment i need ponits
Answer:
x = 1,3
Step-by-step explanation:


