I Need some Help with Geometry, Please?

Question by Jerry Cantrell: I Need some Help with Geometry, Please?
1. A church youth group would like to make a directory of the members of the congregation. Which type of study should be conducted in order to collect the data necessary?

A. census study
B. experiment study
C. observational study
D. survey study
2. Your contract is almost up on your current cell phone. You are considering switching to a new cell phone carrier who claims: “In a recent study, our service dropped 90% fewer calls than our competitors.” Which of the following statements would compromise the validity of the claim?

A. 10,000 calls were monitored as a part of this study.
B. Calls were monitored during peak hours only.
C. Various locations were used to monitor calls.
D. An independent 3rd party company performed the monitoring of the calls.
3. The median age of the 4-H members at the fair this year was 13 years. Based on this information, which of the following statements must be true?

A. Half of the members were 13 years old.
B. Most of the members were 13 years old.
C. Half of the members were 13 years old or older.
D. Most of the members were 13 years old or older.

7. The cafeteria at your school is expanding their selection of side dishes and wants to determine what the students would like to see added. Each cafeteria worker stands at an entrance to the school and asks every fourth student that enters their opinion. What type of sample is this?

A. random sample
B. representative sample
C. convenience sample
D. survey response
8. At the nearby mall in Columbus, Ohio, Art asks every 10th person whom they think will win the upcoming Ohio State vs. Michigan football game. An overwhelming 95% respond with Ohio State. What can be said about your random sample?

A. This is an example of an unbiased sample – of course Ohio State will beat Michigan!! Go Bucks!
B. This is not a random sample; it is a representative sample.
C. This is an example of unintentional bias since you didn’t know whether they were Ohio State fans when you asked them the question.
D. This is an example of intentional bias since you are surveying people in Ohio who will have a tendency to root for Ohio State.
9. Results from an Old Navy online survey from this past weekend showed that 60% of all sales were in the children’s department, 30% were in women’s, and 10% were in men’s. The survey department did not account for the fact that Old Navy was having a huge clearance sale of all children’s apparel. What can be said about this survey?

A. It is intentionally biased because more women complete online surveys after shopping.
B. It is unintentionally biased because the survey department did not know about the clearance sale in the children’s department.
C. It is not biased because anyone could complete the survey, whether they purchased children’s items or not.
D. The results of this survey are invalid because it was conducted online.
10. Sam is conducting a survey to determine what the most popular pizza place is among the 10th grade class. Which sample should Sam use?

A. a random sample of the entire student body
B. a random sample of the 3rd period study hall
C. a random sample of 75 sophomores
D. a convenience sample of her biology class
11. Sarah’s is on the city public relations committee. Her community has experienced an increase in noise due to the new concert center that was recently built. Sarah wants to see if anyone feels that the increase in noise level is a problem. Which survey location would provide the least amount of bias?

A. a hospital center
B. a music store
C. a senior citizen center
D. a shopping mall

Some are missing. Not homework, not SAT either. This was really an open ‘quiz’ for my nephew and I’m not the smartest person when i comes to this.
Thanks to anyone who tries.

Best answer:

Answer by bangarang
1) A
2) B
3) C
7) B
8) D
9) B
10) C
11) D

Add your own answer in the comments!