The Empirical Rule

Which interval shows 95% of the data given a mean of 15 and a standard deviation of 3? 

• 9 to 21
• 12 to 18
• 6 to 24
• 13 to 16

Tags

CCSS.HSS.ID.A.4

At a local high school, GPA's are normally distributed with a mean of 2.9 and standard deviation of 0.6. What percentage of students at the high school have a GPA between 2.3 and 3.5?

• 68%
• 99.7%
• 95%
• 84%

Tags

CCSS.HSS.ID.A.4

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

What percent of people are 3 standard deviations above the mean?

• .15

• 34

• 68

• 2.35

Tags

CCSS.HSS.ID.A.4

2000 freshmen at State Univ. took a Biology test. The scores were distributed normally with μ=70 and σ=5.

What percent of scores are less than 70?

• 34%

• 50%

• 16%

• 84%

Tags

CCSS.HSS.ID.A.4

2000 freshmen at State Univ. took a Biology test. The scores were distributed normally with μ=70 and σ=5.

What percent of scores are between 65 and 75?

• 34%

• 50%

• 68%

• 81.5%

Tags

CCSS.HSS.ID.A.4

This data is:

• Normally distributed

• Skewed left

• Skewed right

Tags

CCSS.HSS.ID.A.1

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.4

What is the shape of the Data Set?

• Skewed Left

• Symmetrical

• Skewed Right

Describe the shape of the graph.

• Symmetrical

• Skewed

• Uniform

What is the shape of the distribution?

• Skewed Left

• Skewed Right

• Symmetric

• Bimodal