It was observed that 30 of the 100 randomly selected students smoked. Find the confidence interval estimate of 95%confidence level t
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- In a sample of 50 children taken from a certain population, 40 play Mobile legends compute 9% confidence interval that estimates the proportion of children who play Mobile LegendsIn a random sample of 400 adults in a small town, 189 of them participated in some form of adult education. Find a 98% confidence interval for the population proportion of adults in the town who participate in adult educationA survey found that out of a random sample of 161 workers, 110 said they were interrupted three or more times an hour by phone messages, faxes, etc. Find the lower bound limit of the 95% confidence interval of the population proportion of workers who are interrupted three or more times an hour. Round your answer to 3 decimal places.
- A survey of 100 customers showed that 36 of them preferred brand B of a particular product. Give a 95% confidence interval estimate for the proportion, p, that prefer brand B.A random sample of 40 students taken from a university showed that their mean GPA is 2.94 and the standard deviation of their GPAs is .30. Construct a 99% confidence interval for the mean GPA of all students at this university.Among 90 adults selected randomly from one town, 67 have health insurance. Find the 90% confidence interval (CI) and margin of error (ME) for the true proportion of all adults in the town who have health insurance and interpret the results.
- A random sample of 300 high school students in a particular town showed that 165 smoke on a regular basis. Find the 95% confidence interval estimating the population percentage for smokers at this high school.It was observed that 30 of the 100 randomly selected students smoked. Find the confidence interval estimate of 95% confidence level for \ pi ratio of smokers in the population.Out of 300 people sampled, 111 had kids. Based on this, construct a 95% confidence interval for the true population proportion of people with kids. < p <
- A survey found that out of 234 workers, 158 said they were interrupted three or more times an hour by phone messages, faxes, etc. Find the lower boundary of the 90% confidence interval of the population proportion of workers who are interrupted three or more times an hour.A poll conducted in 2013 found that 52% of a random sample of 1650 U.S. adult Twitter users get at least some news on Twitter. A. Check the appropriate conditions for constructing a confidence interval. B. Compute the 99% confidence interval for the percentage of U.S. adult Twitter users who get at least some news on Twitter.A sociologist is studying the prevalence of crime in one major city. In a sample of 175 randomly selected residents, 54 say that they have been victimized by a criminal. Based on this sample, construct a 90% confidence interval for the proportion of all residents in this city who have been victimized by a criminal. Then find the lower limit and upper limit of the 90% confidence interval.