1. Fins the Z-score for which 99% of the distribution's area lies between - z and z

Group of answer choices

z = -0.50 and z = 0.50

z= -1.55 and z = 1.55

z = -2.78 and z = 2.78

z=-2.56 and z=2.56

2.

Which of he followings is not an example of continuous random Variable: Length, Pressure, Temperate, Number of defective parts among 1000 tested.

Group of answer choices

Defective parts among 1000

Temprature

Length

Pressure