Consider the statistical study below Complete parts (a) through (c). A survey of
ID: 3221743 • Letter: C
Question
Consider the statistical study below Complete parts (a) through (c). A survey of 14,000 adolescents and a review of smoking laws in 38 states showed that rigorous enforcement of laws on tobacco sales led to a 24.5% decrease in the rate at which 10th-graders became regular smokers. a. Identity the population and the population parameter of interest. Choose the correct answer below. A. The population is the 14,000 adolescents studied. The population parameter is the percentage of the 14,000 adolescents who became regular smokers. B. The population is all adolescents in the 38 states. The population parameters are percentages of 10th-graders in each state who became regular smokers. C. The population is the 14,000 adolescents studied. The population parameters are percentages of 10th-graders in each state who became regular smokers. D. The population is all adolescents in the 38 states. The population parameter is the percentage of the 14,000 adolescents who became regular smokers. b. Describe the sample and sample statistic for the study. Choose the correct answer below. A The sample is the 14,000 adolescents studied in the 38 states. The sample statistic is the percentages of all adolescents in the 38 states who became regular smokers. B. The sample is the 14.000 adolescents studied in the 38 states. The sample statistics are the percentages of 10th-graders in the samples in each who became regular smokers. C. The sample is all adolescents in the 38 states. The sample statistic is the percentages of all adolescents in the 38 states who became regular smokers. D. The sample is all adolescents in the 38 states. The sample statistic is the percentages of 10th-graders in the samples in each state who became regular smokers. c. Identify the type of study. Choose the correct answer below. Experiment Observation Simple random sample Double blindExplanation / Answer
a)
The correct option is D.
i.e. the population is all the adolscents in the 38 states . The population parameter is the percentage of the 14000 adolscents who became regular smokers.
b)
The correct option is B.
i.e. the sample is the 14000 adolscents studied in the 38 states. The sample statistics are the percentages of the 10th graders in the sample in each state who became regular smokers.
c)
The correct option is A.
i.e. experiment
c)