Question
Answer all questions shode-in the correct answer on your non answer sheet using a pencil. Please do not write or make any marks on the test packet. You will be provided with scratch paper Pertain to the following. The national center for drug abuse is conducting a study to determine if heroin use among teenagers in the US be the ages of 15 and 19 has changed. In order to obtain the sample for the the center first classified the population by state, and then randomly select 1.824 teenagers between t he ages of 15 and 19 and asked whether they heroin one or more times. Survey Results showed that 37 had used heroin more times. The population for this study is: (a) All teenagers between the ages of 15 and 19 in the US (b) All teenagers in all of the states in the US (c) All teenagers between the ages of 15 and 19 in Florid (d) 1.824 teenagers between the ages 15 and 19 in the US (e) between the ages of 15 and 19 in each state The sample for this study is: (a) 1, 824 teenagers for this study is: (a) 1.824 teenagers between the ages 15 and 19 (b) 1.824 teenagers in the US (c) All teenagers between the ages of 15 and 19 in each state (d) 37 teenagers in the US (e) 1824 teenagers between the ages of 15 and 19 in each state. What kind of sampling technique was used in the study? (a) Systematic (b0 Random (c) stratified (d) Convenience What level of measurement would this data have? (a) Nominal (b) Ratio (c) Interval (d) Ordinal What type of study is this? (a) Prospective (b) retrospective (c) Cross-sectional
Explanation / Answer
1)Population here is all teenagers between 15 and 19 in US. Hence the correct option is (a)
2) sample was 1824 teenagers from different states between 15 and 19. Hence the correct option is (a)
3)It was a stratified random sampling, since we are selecting teenagers randomly from different states. Hence (c)
4)It is a yes/no types survey. So it is nominal,Hence (a)
