5. jason wants to find out if students prefer...

5. jason wants to find out if students prefer football or basketball. he surveys the entire football team.\n6. a dog food company is making a new line of treats. to find out which flavors are preferred, they ask 25 people who have purchased their brand of dog food.\n7. a principal wants to know how his teachers feel about certain issues at school. he emails a survey to 10 randomly selected teachers from each grade level.\n8. a pizza store manager wants to know which pizza topping most people prefer. he surveys everyone who places an order over the phone on one given night.\n9. an apartment complex manager wants to survey residents about the apartment maintenance service. a survey is sent to 100 randomly selected apartment numbers.\n10. darren wants to find out whether 7th grade students prefer music, art or sports. he generates 150 random 7th grade names from the school enrollment list and surveys those students.

Answer

# Brief Explanations: 5. This is a biased sample as football - team students may have a different preference than the general student body. 6. This is a biased sample as only previous customers are surveyed, excluding potential new customers. 7. This is a relatively unbiased sample as teachers are randomly selected from each grade level. 8. This is a biased sample as it only surveys phone - ordering customers on one night, not representing all customers. 9. This is a relatively unbiased sample as apartment numbers are randomly selected. 10. This is a relatively unbiased sample as 7th - grade students are randomly selected from the enrollment list. # Answer: 5. Biased 6. Biased 7. Unbiased 8. Biased 9. Unbiased 10. Unbiased