4th REVIEW: Understanding Normal Distribution

Which of the following statement is best described the notation, X~N( μ, σ)?

• The normal distribution with mean and standard deviation

• Random variable X is normally distributed with mean and standard deviation

• N follows a variable distribution with mean and standard deviation

• Mean follows a normal distribution with variance and standard deviation

Tags

CCSS.HSS.ID.A.4

Which of the following areas is data fall within 2 standard deviation of the mean?

• 68.26%

• 68.62%

• 95.44%

• 99.72%

Tags

CCSS.HSS.ID.A.4

Using the NORMAL EQUATION, where mean is 100 and the standard deviation is 15. Let the continuous random variable is 55. Find the value of y.

Choose the nearest answer.

• y = 0.000195

• y = 0.000295

• y = 0.000395

• y = 0.000495

Tags

CCSS.HSS.ID.A.4

Which of the following formula is best described for the probability density function?

• 
• 
• 
• 

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

It has an infinite number of possible values that can be represented by an interval on the number line.

• Normal distribution

• Standard normal distribution

• Normal curve

• Normal random variable

It is a continuous probability distribution for a normal random variable, x.

• Normal distribution

• Normal random variable

• Standard normal distribution

• Normal curve

It is a bell-shaped distribution which has important role in inferential statistics.

• Normal random variable

• Normal curve

• Standard normal distribution

• Normal distribution

Tags

CCSS.6.SP.A.3

Which of the following formula is best described the z-score?

True or False: The values of mean, median, and mode in a normal curve are located on a different point.

• True

• False

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

The data value is 9.8 and the z-score is 2. What is the data value associated with a z-score of 2.1?

• 9.12

• 9.11

• 9.10

• 9.9

Tags

CCSS.HSS.ID.A.4