AP Stat Unit 5

How is normality established for a proportion problem?

• n ≥ 30, Central Limit Theorem

• np > 10, n(1 - p) > 10

• the distribution shows no outliers, n < 10

• N ≥ 10n

• subjects have been selected using some random process

Tags

CCSS.HSS.ID.A.4

How is indepedence established for a proportion problem?

• n ≥ 30, Central Limit Theorem

• np > 10, n(1 - p) > 10

• the distribution shows no outliers, n < 10

• N ≥ 10n

• subjects have been selected using some random process

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.3

CCSS.HSS.CP.A.4

CCSS.HSS.CP.B.6

CCSS.HSS.CP.B.8

How can normality be established for a means problem?

• n ≥ 30, Central Limit Theorem

• np > 10, n(1 - p) > 10

• the distribution shows no outliers, n < 10

• N ≥ 10n

• subjects have been selected using some random process

Tags

CCSS.HSS.ID.A.4

The Gallup Poll asked a random sample of 1785 adults whether they attended church during the past week.  Let p-hat be the proportion of people in the sample who attended church.  A newspaper report claims that 40% of all U.S. adults went to church last week.  Suppose this claim is true. 
What is the mean of the sampling distribution of p-hat?

• 0.4
• 0.44
• 0.56
• 0.6

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.MD.A.2

What happens to the shape of a sampling distribution of sample means as n increases?

• It becomes narrower and bimodal.
• It becomes narrower and more normal.
• It becomes wider and skewed right. 
• It becomes wider and more normal. 

These symbols represent the mean and standard deviation for which of the following distributions?

• The Population
• The Sample
• The Sampling Distribution

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.4

These symbols represent the mean and standard deviation for which of the following distributions?

• The Population
• The Sample
• The Sampling Distribution

Tags

CCSS.HSS.ID.A.4

The mean and standard deviation of a population are 200 and 20, respectively. Sample size is 25. 
What is the mean of the sampling distribution?

• 200
• 16
• 25
• 4

Tags

CCSS.HSS.MD.A.2

CCSS.HSS.MD.A.3

The mean and standard deviation of a population are 200 and 20, respectively. Sample size is 25. 
What is the standard deviation of the sampling distribution?

• 200
• 16
• 25
• 4

Tags

CCSS.HSS.ID.A.4

Scares of the math part of the SAT in a recent year followed a normal distribution with a mean 515 and a standard deviation 114. You choose an SRS of 100 students and calculate the mean SAT Math score. Which of the following are the mean and standard deviation of the sampling distribution of x̄?

• Mean = 515, SD = 114

• Mean = 515, SD = 114/√100

• Mean = 515/100, SD = 114/100

• Mean = 515/100, SD = 114/√100

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.ID.A.4

CCSS.HSS.MD.A.2