F24 - M3 - Practice: Statistics

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.

• Every person in the United States.

• A selection of shoppers from different shoppers from different states.

• 3,800 children age 5-15

A restaurant chain wanted to find out how the customer experience was in a store. Which choice best represents a sample?

• 1 out of every 35 customers

• All of the people who ate at the store.

• 240 customers who spent more than $10.

• 299 customers who filled out complaint cards.

What would be the best data collection strategy for a study of the effects of population growth on an ecosystem?

• Observational

• Experiment

• Simulation

• Survey

A new heart medication has passed the beginning stages of trial. What would be the best data collection strategy to now study the effects of on a group of patients?

• Observation

• Experiment

• Simulation

• Survey

What would be the best data collection strategy for researching the number of times a newscaster says the word "um" while on air?

• Observation

• Experiment

• Simulation

• Survey

What would be the best data collection strategy for an animal behaviorist who provides two different types of food and records which food the animal selected initially?

• Observational

• Experiment

• Simulation

• Survey

When students at JMRHS have their monthly fire drill that is required by state law, it is an example of what form of data collection?

• Observation

• Experiment

• Simulation

• Survey

For a class project, a student in a statistics class surveys the monthly rent for 32 unfurnished one-bedroom apartments in Boston and finds the mean monthly rent to be $1400 with a standard deviation of $220.

Find the margin of error for the sample mean.

• $77.78

• $4.31

• $188.78

• $494.97

Complete the following statement about the change in size.

If you increase the size of your sample, the ME will . . . .

• increase

• decrease

• stay the same

Complete the following statement about the change in size.

If your sample has a larger standard deviation, the ME will . . . .

Hint: Use the formula and adjust numbers in Desmos.

• increase

• decrease

• stay the same