1. What catagory of variable has its measured value change from one replicated experiment to another?

Group of answer choices:

.Systematic

.Alternating

.Discrete

.Random

2.

Find the probabilty using the noramal standard distribution, wher The mean is zero and the standard devaition is 1. P (Z<-1.28 and Z>1.28)

0.2006

0.8997

0.5

0.1003