Ch 7 Sampling Distributions Review

As the sample size increases, the standard deviation of the sampling distribution ______________.

• decreases

• increases

• becomes more normal

• gets close to 1

According to a recent newspaper article, 64% of teens have an active twitter account. 64% is a ____________.

• statistic

• parameter

• population

• sample

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

According to a recent newspaper article, 64% of teens have an active twitter account. What symbol would you use with 64%?

• x̄

• p̂

• μ

• p

The average GPA of Mr. Z's 3rd period class is 3.5. The number 3.5 is a _____________.

• population

• parameter

• statistic

• sample

Tags

CCSS.HSS.IC.A.1

The average GPA of Mr. Z's 3rd period class is 3.5. What symbol would you use to describe the number 3.5?

• μ

• p

• p̂

• x̄

A population has mean μ = 25 and standard deviation σ = 3.4. Find the mean and standard deviation of sampling distribution when n = 16.

• 25, 0.85

• 25, 3.4

• 6.25, 0.85

• 6.25, 3.4

Tags

CCSS.HSS.MD.A.2

CCSS.HSS.MD.A.3

A large population is skewed right. Describe the sampling distribution of sample means of size 5.

• normal

• approximately normal

• skewed left

• skewed right

Tags

CCSS.HSS.ID.A.4

A large population is skewed left. Describe the sampling distribution of sample means of size 50.

• normal

• approximately normal

• skewed right

• skewed left

Tags

CCSS.HSS.ID.A.4

62% of OHS students have plagiarized. Describe sampling distribution of size 30.

• Approximately normal with mean 0.62 and SD 0.0886

• Approximately normal with mean 62 and SD 8.86

• Approximately normal with mean 0.62 and SD 2.66

• The sample size is too small to determine shape.

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.ID.A.4

62% of OHS students have plagiarized. Find the probability that less than 50% of a sample of 30 students has plagiarized.

• 0.0885

• 0.9115

• 0.0968

• 0.9032

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.ID.A.4