9. Which statement best describes non-probability sampling?
a. It is a tedious process and time consuming.
b. It is a non-random process of selecting participants.
c. The samples are highly representatives of the population.
d. All members of the population have equal chances of being selected.
10. Which of the following sampling techniques is based on accessibility of the participants on the part of the researcher?
a. Cluster random
c. Simple random
b. Convenience
d. Systematic
For questions 11-14, refer to the given situation. Situation: A farmer wants to study whether organic fertilizer will increase the growth of the lettuce plants at a fast rate. He used 20 lettuce plants for this experiment. He randomly chose 10 lettuce samples treated with organic fertilizer while the remaining 10 samples are to be treated with commercial fertilizer. The amount of water and sunlight are kept the same for all the sample plants. 11. What type of experiment design is used in the given situation?
a. complete block design b. completely randomized design c. randomized complete block design d. both b and c
12. Which are the experimental units?
a. 10 lettuce plants without fertilizer
b. 10 lettuce plants with organic fertilizer
c. 20 lettuce plants used in the experiment
d. 40 lettuce plants used in the experiment
13. What is the purpose of keeping the same amount of water and suplight for all lettuce plants?
a. serve as extraneous variables
b. to focus on the experimental treatment
c. to know other variables that may contribute to the growth of the lettuce plants d. both a and b
14. What is the primary purpose of having a group of 10 lettuce plants treated with commercial fertilizer?
a.control
b. extraneous
c. experimental
d. study subjects
15. Members of the YES-O plan to sell plants as a fundraiser for their upcoming activities. They will survey 50 students in their school on the plants they want to purchase. Which choice represents a population?
a. all members of YES-O
b. 50 students in the school
c. all students in thir school
d.50% of all the students in school ​