The Denver Police Department wants to improve its image with teenagers. A uniformed officer is sent to a school 1 day a week for 10 weeks. Each day the officer visits with students, eats lunch with students, attends pep rallies, and so on. There are 18 schools, but the police department can visit only half of these schools this semester. A survey regarding how teenagers view police is sent to all 18 schools at the end of the semester. (Select all that apply.) a) After the police visits, survey 9 of the schools to see if there is a difference in views between the two groups. b) No placebo is being used. c) Use random selection to pick 18 schools to visit. d) After the police visits, survey all the schools to see if there is a difference in views between the two groups. e) A placebo is used for the remaining 9 schools. f) Use random selection to pick nine schools to visit.
The Denver Police Department wants to improve its image with teenagers. A uniformed officer is sent to a school 1 day a week for 10 weeks. Each day the officer visits with students, eats lunch with students, attends pep rallies, and so on. There are 18 schools, but the police department can visit only half of these schools this semester. A survey regarding how teenagers view police is sent to all 18 schools at the end of the semester. (Select all that apply.)
a) After the police visits, survey 9 of the schools to see if there is a difference in views between the two groups.
b) No placebo is being used.
c) Use random selection to pick 18 schools to visit.
d) After the police visits, survey all the schools to see if there is a difference in views between the two groups.
e) A placebo is used for the remaining 9 schools.
f) Use random selection to pick nine schools to visit.
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