Normal Curve Practice

The center of the curve represents what value of a data set?

• μ
• δ
• Σ
• Ζ

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.4

What is the percentage of data that falls within two standard deviations of the mean? 

• 68%
• 95%
• 99.7%

Tags

CCSS.HSS.ID.A.4

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

• .2912
• .5500
• .9394
• .7088

Tags

CCSS.HSS.ID.A.4

What is the area under the curve to the right of z = .25, the white part of the curve?

• .5987
• .4013
• .9938
• .0062

Tags

CCSS.HSS.ID.A.4

What is the area under the curve between z = 0 and z = 1.45?

• .9265
• .4265
• .4500
• .5000

Tags

CCSS.HSS.ID.A.4

What is the area under the curve between z = 1 and z = 0 ?

• .68
• .34
• 1
• .8413

Tags

CCSS.HSS.ID.A.4

What is the area under the curve greater than z = 3.01

• .9987
• .0013
• .9990
• .001

Tags

CCSS.HSS.ID.A.4

What is the total area under the curve?

• 1
• .9998
• .997
• -3 < z < 3

Tags

CCSS.HSS.ID.A.4

In the world of Harry Potter, wand lengths are normally distributed with a mean of 10.7 inches and a standard deviation of 1.6 inches.

What proportion of wizard and witches have wands shorter than Harry Potter's wand which is 11 inches?

• 0.4256

• 0.0744

• 0.5744

• 0.2450

Tags

CCSS.HSS.ID.A.4

In the world of Harry Potter, wand lengths are normally distributed with a mean of 10.7 inches and a standard deviation of 1.6 inches.

What proportion have wands between 9 and 12 inches?

• 0.6477

• 0.1136

• 0.1604

• 0.3143

Tags

CCSS.HSS.ID.A.4