A researcher is wondering whether the smoking habits of young adults (18-25 years of age) in a certaincity in the U.S. are the same as the proportion of the general population of young adults in the U.S. Arecent study stated that the proportion of young adults who reported smoking at least twice a week ormore in the last month was 0.16. The researcher collected data from a random sample of 75 adults in thecity of interest. State the hypotheses to be tested for this study

A government health official is interested in whether there has been a statistically significant decrease in teen smoking rates. In 2013, 8.4 percent of 12th graders had used tobacco in the past 30 days. With this data, we test the following hypotheses at the 5% significance level.The health official surveys 200 randomly selected 12th graders and finds that 14 of them have used tobacco in the past 30 days.H0: The percentage of 12th graders who have smoked in the past 30 days is equal to 8.4%.Ha: The percentage of 12th graders who have smoked in the past 30 days is greater than 8.4%.The p-value is 0.09. Which conclusion is correct? Reject H0. Accept H0. Fail to reject H0.

In the given question, the given statement is "An annually conducted nationwide survey by a leading health research organization shows a continuing marked decline in the use of illegal drugs like hashish and charas by high school seniors over the last five years."Which of the following, if true, would provide most support for concluding from the survey results described above that the use of illegal drugs by people below the age of 20 is declining?Another survey found an increase in the rate of smoking amongst the high school seniors.In the past, high school seniors were consistently the population group most likely to use illegal drugs and most likely to use them heavily.The percentage of high school seniors who use illegal drugs is consistently very similar to the percentage of all people below the age of 20 who use illegal drugs.Both (2) and (3).

Time magazine reported the result of a telephone poll of 800 adult Americans. The question posed of the Americans who were surveyed was: "Should the federal tax on cigarettes be raised to pay for health care reform?" The question to be investigated: Is there sufficient evidence at the 𝛼=0.05, say, to conclude that the two populations — smokers and non-smokers — differ significantly with respect to their opinions?The test statistic for this hypothesis test is z = 2.18 with p-value 0.0292.What is the correct conclusion?

In a survey, editors of a magazine asked 100 people whether or not they smoke and whether or not they exercise regularly (more than twice a week). The results are summarized in the table below.  Smoke Do not smokeExercise regularly 6 12Do not exercise regularly 18 64(a) What percentage of the adults exercise regularly?%(b) What percentage of the adults smoke?%

Did I Get ThisResearchers from Dartmouth Medical School conducted a study in 2003 to look at the connection between watching actors smoking in movies and smoking initiation among adolescents. In the study, 6,522 U.S. adolescents ages 10-14 who had never tried smoking were randomly selected. Of those who subsequently tried smoking for the first time, 38% did so because of exposure to smoking in the movies.Estimate the proportion of all U.S. adolescents ages 10-14 who started smoking because of seeing actors smoke in movies by constructing a 95% confidence interval.Reset this ActivityDid I Get ThisHarris Interactive® conducted an online study from January 3 to 10, 2006 among a nationwide sample of 1,040 U.S. adults (ages 18 years and over), of whom 565 currently use organic foods in preparing meals. Figures for age by gender, race/ethnicity, education, region, and household income were weighted to reflect the total U.S. adult population. Propensity score weighting was used to adjust for respondents' propensity to be online. Construct a 99% confidence interval for the proportion of all U.S. adults who use organic foods in preparing meals.Reset this ActivityDid I Get ThisBased on the answer to the previous question, what is the margin of error of the confidence interval for the number of U.S. adults who use organic foods in preparing meals?0.010.040.080.543