CCSS.Math.Content.HSS.IC.A.1

If the sample is representative of a high school with 2,000 freshman and seniors, then based on the table, what is the predicted number of freshman at the high school who would select math as their favorite high school subject?

• 520
• 240
• 65
• 30

Tags

CCSS.Math.Content.HSS.IC.B.4

CCSS.Math.Content.HSS.IC.A.1

Elise, a supermarket employee, approached 50 random customers and asked whether they would be willing to discuss what they like most about the store. She interviewed the 22 who said yes. Is this sample of the supermarket's customers likely to be biased?

• yes

• no

Tags

CCSS.Math.Content.7.SP.A.1

CCSS.Math.Content.HSS.IC.A.1

Marianne wanted to know students' opinion on the new schedule at school. She places students' names in a container and randomly picks out 20 names. 

• Convenience Sampling
• Systematic Random Sampling
• Simple Random Sampling
• Volunteer response

Tags

CCSS.Math.Content.HSS.IC.A.1

Determine the type of sampling used in the following scenario: Farmer Joe separates his apple tree farm into 10 regions.  He counts the number of apples produced in just one of the regions and uses that estimate to predict the number of apples produced on the whole farm.  This is _______ sampling.

• Simple
• Cluster
• Stratified
• Systematic

Tags

CCSS.Math.Content.HSS.IC.A.1

Construct a 90% confidence interval of a random sample size of 19 cows with a mean of 155.526 and a standard deviation of 19.993. 

• (146.54, 164.52)
• (147.57, 163.48)
• (147.59, 163.46)
• (143.69, 167.36)

Tags

CCSS.Math.Content.HSS.IC.A.1

9

• A

• B

• C

• D

• E

Tags

CCSS.Math.Content.HSS.IC.B.4

CCSS.Math.Content.HSS.IC.A.1

The normal curve shown represents the sampling distribution of a sample mean for sample size n = 25, selected at random from a population with standard deviation sd. Which of the following is the best estimate of the standard deviation of the population, sd ?75

• 3

• 6

• 15

• 30

• 75

Tags

CCSS.Math.Content.HSS.IC.A.1

The parameter is a number describing the:

• population

• sample

• survey

• percent

Tags

CCSS.Math.Content.HSS.IC.B.4

CCSS.Math.Content.HSS.IC.A.1

A recent survey found that 77% of high schoolers use their phones more than 4 hours a day on average. The margin of error was 3%. What is the interval for which we could expect to find the truth of the population?

• 77% - 80%

• 74% - 77%

• 74% - 80%

• 50 million high schoolers - 120 million

Tags

CCSS.Math.Content.HSS.IC.B.4

CCSS.Math.Content.HSS.IC.A.1

Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?

• A. Thirty randomly selected students from her school

• B. Thirty students who are rarely tardy

• thirty of her friends

Tags

CCSS.Math.Content.HSS.IC.A.1