Normal Distributions Test

Which of the following graphs shows a normal curve?

• 
• 
• 
• 

Tags

CCSS.HSS.ID.A.4

What shape is a normal distribution curve?

• Half curve
• Round curve
• Bell curve
• Square curve

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

• 0

• 25

• .5

• 1

Use the image of the normal graph provided. What is the value of the mean?

• 6

• 34

• 52

• 70

Tags

CCSS.6.SP.A.3

What percent of people within 1 standard deviation of the mean?

• 99.7

• 34

• 68

• 95

Tags

CCSS.HSS.ID.A.4

What percent of people within 2 standard deviations of the mean?

• 99.7

• 34

• 68

• 95

Tags

CCSS.HSS.ID.A.4

What percent of people within 3 standard deviations of the mean?

• 99.7

• 34

• 68

• 95

Tags

CCSS.HSS.ID.A.4

Use the following information and the Empirical Rule to estimate the answer.

The ages of golfers are normally distributed, with a mean of 38 and a standard deviation of 4.

Find the percentage of golfers that are between 30 and 46 years old.

• 68%

• 94%

• 95%

• 99.7%

Tags

CCSS.HSS.ID.A.4

Use the following information and the Empirical Rule to estimate the answer.

The mean life of a tire is 30,000 km. The standard deviation is 2000 km. Then, 68% of all tires will have a life between ___________ km and __________ km.

•  28,000 km and 32,000 km.

• 24,000 km and 34,000 km.

• 26,000 km and 34,000 km.

• 27,000 km and 31,000 km.

Tags

CCSS.HSS.ID.A.4

Use the following information and the Empirical Rule to estimate the answer.

The shelf life of a particular dairy product is normally distributed with a mean of 12 days and a standard deviation of 3 days. About what percent of the products last between 12 and 15 days?

• 68%

• 34%

• 16%

• 2.5%

Tags

CCSS.HSS.ID.A.4