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
159.2/3.2=49.75
take 159.2 and divide it by 3.2 and you get 49.75
to check your answer you would take 159.2 divided by 49.75
159.2 divided by 49.75 = 3.2
3.2 is 49.75 percent of 159.2
The answer would’ve been A
Question ? There is no question to help
