Answer:
The Z score of the person is -3.09.
Step-by-step explanation:
The standard normal deviate (Z) for a normal distribution is given by
![Z=\frac{X-\bar{X}}{\sigma }](https://tex.z-dn.net/?f=Z%3D%5Cfrac%7BX-%5Cbar%7BX%7D%7D%7B%5Csigma%20%7D)
where,
X = the value of observation
is mean of the observations and
σ = standard deviation of the score
Applying values we get
![Z=\frac{59-72}{4.2}=-3.09](https://tex.z-dn.net/?f=Z%3D%5Cfrac%7B59-72%7D%7B4.2%7D%3D-3.09)
(72/80)x90=81
Divide seventy-two by eight and multiply it Ninety.
Would this work? Hope it helps
Answer:
Adding 1/4 each time
Step-by-step explanation:
1/4+1/4=1/2
1/2+1/4=3/4
3/4+1/4=1