4. would you conduct a survey on each topic u...
4. would you conduct a survey on each topic using personal interviews or written forms?\na) household income and spending on travel\nb) time spent on homework and student marks\nc) preferences for different brands of shampoo\nd) favourite colours and gender\ne) whether people have encountered discrimination in their lives\n10. a newspaper columnist wants to find out what people think of a proposed by - law that would limit the height of fences they can build in their yards. he writes this survey question in his weekly column. will the survey results be valid? justify your answer. if you feel the survey is not valid, how could it be improved?\n11. describe how the town council in example 1 could conduct a valid survey to collect people’s opinions about the arena.\n13. assessment focus a salesperson for a new cellular phone service provider randomly selected the names of 20 small business owners from an association list of 500 members. she phoned each of them and asked them this question. all responded with a rating of 3 or 4. the salesperson prepared a business proposal for her boss, stating: “100% of the local small business owners i surveyed want up - to - date cell phone service. we should launch a large sales campaign very soon.”\na) are the survey results valid? justify your answer.\nb) what changes would you make to improve the survey?
Answer
# Brief Explanations:
## 4.
### a)
Personal interviews could be better as they may allow for more detailed and accurate responses about sensitive income - related information.
### b)
Either could work, but personal interviews might help clarify any confusion about what is meant by "time spent" and "student marks".
### c)
Written forms could be sufficient as it's a relatively straightforward preference question.
### d)
Either could be used, but written forms might be quicker for respondents to answer.
### e)
Personal interviews may be more appropriate as it's a sensitive topic and respondents may need more privacy and understanding.
## 10.
The survey results are likely not valid. The question is leading as it implies the government is interfering. To improve, the question should be neutral, like "Do you support a by - law that limits fence height in yards to 2.44 m?".
## 11.
The town council could use a random sample of residents. They could use a combination of written forms (e.g., mailed out or available online) and personal interviews (e.g., at community centers) to collect a wide range of opinions.
## 13.
### a)
The survey results are not valid. The sample size is small (20 out of 500) and may not be representative. Also, the question may lead respondents to rate higher due to the reference to losing business.
### b)
Increase the sample size. Use a more neutral question, like "How important is it for your business to have a modern cell phone service?". Also, consider using a more diverse sampling method.
# Answer:
## 4.
### a) Personal interviews
### b) Either
### c) Written forms
### d) Either
### e) Personal interviews
## 10. No. Make the question neutral.
## 11. Use a random sample and a combination of written forms and personal interviews.
## 13.
### a) No. Small sample size and leading question.
### b) Increase sample size, use a neutral question, and a more diverse sampling method.