Normal Distribution

What shape is a normal distribution curve?

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

Tags

CCSS.HSS.ID.A.4

If the shaded area under the curve is .85, what is the other missing portion of the curve?

• .26
• .15
• .30
• .17

Tags

CCSS.HSS.ID.A.4

 
Which curve has the greater standard deviation?

• Red
• Black
• Blue

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

The normal curve is symmetrical about the mean.

• True
• False

Tags

CCSS.HSS.ID.A.4

                                                     
                                                                                        Find x ≥  x̄ + 1σ

• 97.5
• 13.5
• 84
• 16

Tags

CCSS.HSS.ID.A.4

Calculate the z score if the mean is 75, your score is 90 and σ is 4.5

• -3.33
• 3.33

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.HSF-LE.A.1B

At a local high school, GPA's are normally distributed with a mean of 2.9 and standard deviation of 0.6. What is the GPA of the highest 2.5% of the students?

• 4.1 
• 4.1 or higher
• 4.7
• 4.5 or higher

Tags

CCSS.HSS.ID.A.4

Scores on a certain standardized test have a mean of 500, and a standard deviation of 100. How common is a score between 600 and 700? Calculate the probability. 

• 2.5%
• 2.35%
• 16%
• 13.5%

Tags

CCSS.HSS.ID.A.4

In a population, if μ=125 and σ=25, how common are values in the 100 – 175 range?

• 68%
• 84%
• 81.5%
• 95%

Tags

CCSS.HSS.ID.A.4