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1.Using the text and lecture notes, indicate what (if anything) is wrong with each of the survey questions below. If you think there is nothing wrong with the question, write correct in the left column beside it. If you think there is something wrong with the question, write what you think is wrong in the left column beside it. Read each question/scale/instructions carefully. |
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1. Please circle the range that contains your age. a. Under 25 b. 26 to 35 c. 36 to 45 d. 46 to 55 e. 56 to 65 f. 65 and over |
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2. Do you think it is wrong to murder baby seals? a. Yes b. No c. Dont know |
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3. Please indicate whether or not you agree with each of the statements below by rating them on the following scale: 1) Very unimportant 2) Somewhat unimportant 3) Neither important nor unimportant 4) Somewhat important 5) Very important a) The federal government did a good job managing the COVID-19 pandemic. b) The provincial government did a good job managing the COVID-19 pandemic. |
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4. Are you cognizant of the course requirements? a. Yes b. No c. Dont know |
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5. Which store do you like best? a. Sobeys b. Giant Tiger c. Atlantic Superstore |
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6. Dont you think the new safety protocol is dangerous? a. Yes b. No c. Dont know |
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7. Would you agree that our government has mismanaged the COVID-19 crisis? a. Yes b. No c. Dont know |
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2.Determine the Sample Size for the Following Questions
1. Sylvia wants to sample her café market. A market study conducted last year indicated that 65% might visit her café. How big a sample does she need to have a margin of error of plus/minus 5%, 19 out of 20 times?
2. Assume that Sylvia in Q1 has decided to change her margin of error to plus/minus 2%, how big a sample size does she need? Has it changed from Q1?
3. Assume that Sylvia has learned that previous research showed that 25% of the market would visit her coffee shop. With a margin of error of plus/minus 5%, 19 out of 20 times, how big a sample size does she need?
4. Assume that Sylvia wants to estimate the sample size she needs with the previous market estimate of 25% as in Q3, but she wants to be confident at the 99% level. How big a sample size does she need?
5. What sample size is required to estimate the average income of a population, with a range of income from $50,000 to $100,000, and a margin of error of no more than $5,000, 99% of the time?
6. How would the sample size needed change from that in Q5 if the confidence level was reduced to 95%?
7. Tabbi wants to open a bridal salon. She wants to estimate the average price of wedding dresses sold in her city. She wants to be accurate 95% of the time and she has the standard deviation from a previous market study of $800. She wants to be within $75/dress. How big a sample does she need to draw to do her research?
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