ENH AA__Unit 1 Review Part I

Identify the standardized unit that provides the relative

position of any observation in the distribution and is also the number of

standard deviations that the observed value lies away from the mean, μ.

• T test

• Z score

• Chi test

• F-test

A prediction has been made that the chance that a person will be robbed in a certain city is 15%. Is this...

• Inferential Statistics

• Descriptive Statistics

Tell if the statement if Descriptive or Inferential

A recent survey of 2000 adults having an MBA reported that the average salary is more than $65,000 a year

• Inferential

• Descriptive

A beverage company wanted to see if people in the United States liked their new logo. Which choice best represents a population?

• A selection of logo artists.

• A selection of shoppers from different states

• Every person in the United States.

• 3,800 children age 5 - 15

What is the population? What is the sample?

• Population - 55 practitioners in LA

  Sample - Family practitioners in LA

• Population - Family practitioners in LA

  Sample - 55 practitioners in LA

Biased or Random?

Reign wants to determine the most popular brand of cereal in all of Kentucky. So he polls all the houses on his street to get a sample.

• Biased

• Random

Units of the population are ordered in some fashion.  Usually, every k-th unit is chosen.

• proportional

• probable

• Simple

• systematic

Identify the sampling design: Mr. Rhoades asks Mr. May, his neighbor, who his favorite America's Got Talent contestant is

• Systematic

• unbiased

• Simple

• convenience

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

A dealership assigns each car a number and then uses a random-number table to select the cars to be inspected.  What type of sampling is this?

• systematic

• random sample

• convenience

• biased sampling