CBS 1313 _Chapter 9_part 1

Find the area under the standard normal curve that lies to the left of z=2.1.

• 1.79%

• -1.79%

• 98.21%

• 0.98%

If you had to guess the probability of the gray area, which would you choose?

• 0.2

• 0.4

• 0.6

• 0.8

What is the the total area under the standard normal distribution curve?

• 100
• 25
• .5
• 1

Find the following probability of Z-values:

P( Z < 2.2)

• 0.7896

• 0,8971

• 0.9861

• 0.9884

Find the following probability of Z-values:

P( Z > -1.83)

• 0.6496

• 0.7971

• 0.8861

• 0.9664

What is the area under the curve to the left of z = 0.55 ?

• .2912
• .5500
• .9394
• .7088

• 0.0668

• 0.4132

• 0.0544

• 0.0741

• 0.0427

• 0.0457

• 0.0543

• 0.0224