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1. A class wanted to raise money for their school trip. They could raise money by selling raffle tickets for a Sony PlayStation 5 Gaming Console. Before they decide to have a raffle, they wanted to estimate how many students in the whole school would buy a ticket. They decided to do a survey to find out first. The school has 600 students in Grades 1–6 with 100 students in each year.
a. How many students would you survey? How would you choose them? Explain your answers.
b. Shannon got the names of all 600 students in the school and put them in a hat. Then she pulled out 60 names. What do you think of Shannon’s survey? Explain your answer
c. Jake asked 10 children at an after-school meeting of the computer games club. What do you think of Jake’s survey? Explain your answer.
d. Adam asked all of the 100 children in year 1. What do you think of Adam’s survey? Explain your answer. e. Raffi asked 60 of his friends. What do you think of Raffi’s survey? Explain your answer
f. Claire set up a booth outside the canteen. Anyone who wanted to stop and fill out a survey could. She stopped collecting surveys when she got 60 kids to complete them. What do you think of Claire’s survey? Explain your answer.
2. Suppose you want to conduct a survey in a certain university. If your research adviser told you to use 5% margin of error for your target sample size, how many respondents from each course do you need to identify? Nursing (6000), Accountancy (500), Management (2000), Marketing (1000) and Education (2500).
3. A College of Education of a certain university will conduct a survey of its graduating students in order to learn about the starting salaries and the job market for new graduates. The population of the graduating education students is classified according to their majors, as follows: Early Childhood Education (57), Elementary Education (126), Secondary Education (132), Special Needs Education (42), and Post Graduate Studies (153). If you would like to select 60 students for the sample, how large must a sample be for each major?
4. In a certain school, the number of first year college students is 400, second year is 350, third year is 500 and fourth year is 600. What would be the required margin of error if the sample size needed by a researcher in that school is 400?
Sagot :
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