AP Stat Experiment

What is the response in this experiment?"Does eating breakfast improve test score?"

• eating breakfast or not

• the grade you got on the test

• what time you get up in the morning

• what you eat for breakfast

The editor of the student newspaper was in the process of making some major changes in the newspaper’s layout.  He was also contemplating changing the typeface of the print used.  To help him make a decision, he asked six individuals to read four newspaper pages, with each page printed in a different typeface.  If the reading speed differed, then the typeface that was the fastest would be used.  However, if there was not enough evidence to allow the editor to conclude that such differences existed, the current typeface would be continued. 

• Retrospective Study

• Prospective Study

• Experiment

• None of the above

Fill in the blanks:

___ eliminates lurking variables

___ isolates lurking variables

___ distributes lurking variables

• Control, Blocking, Randomization

• Blocking, Control, Randomization

• Randomization, Replication, Control

• Control, Randomization, Blocking

A grocery chain runs a prize game by giving each customer a ticket that may win a prize when the box is scratched off. Printed on the ticket is a dollar value ($500,$100, $25) or the statement “This ticket is not a winner.” Monetary prizes can be redeemed for groceries at the store. Here is the probability distribution above represents the amount won on a randomly selected ticket.
Which of the following are the mean and standard deviation, respectively, of the winnings?

• $15.00, $2900.00

• $15.00, $53.85

• $15.00, $26.93

• $156.25, $53.85

• A

• B

• C

• D

• E

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

• The Population

• The Sample

• The Sampling Distribution

• A

• B

• C

• D

• E

Involves dividing the population into subgroups, you randomly select entire subgroups. What sampling technique is this?

• Simple Random Sample

• Snowball Sample

• Cluster Random Sample

• Stratified Random Sample

The histogram represents data obtained after a census of an entire population. The sampling distribution of the sample mean based on samples of size 2 were simulated, and a histogram of the results was produced. Which of the following histograms is most likely the histogram of that sampling distribution?

• 
• 
• 
• 
• 

The school district is interested in finding out student and parent opinions about the dress code. They obtain a list of students from each school in the district and put them in alphabetical order. They then send a survey to every 25th student and their parents on the list.

• Simple Random Sampling

• Stratified Random Sampling

• Systematic Sampling

• Convenience Sampling