Create confidence interval for the proportion of adults

Reference no: EM131421673

National data in the 1960s showed that about 44% of the adult population had never smoked cigarettes. In 2004 a national health survey interviewed a random sample of 881 adults and found that 54.6% had never been smokers.

a) Create a 95% confidence interval for the proportion of adults (in 2004) who had never been smokers.

b) Does this provide evidence of a change in behavior among Americans? Using your confidence interval, test an appropriate hypothesis and state your conclusion.

Reference no: EM131421673

Questions Cloud

The responsibility of the store to implement this regulation : Fire regulations usually require a store to have a fire extinguisher. Inspectors will check from time to time to confirm that the store complies with the regulation. If it fails to comply, the regulators may impose a fine. What are the liability issu..

Is the alternative hypothesis one sided or two sided : One sided or two? In each of the following situations, is the alternative hypothesis one-sided or two-sided? What are the hypotheses?

About the learning curves : You own a car body/paint repair shop. You have been asked to submit a bid to repair ten (10) identical cars from a dealer lot that were all similarly damaged by a hail storm. If there is no learning curve, what is the lowest total bid (for 10 cars) y..

Calculate measurements of central tendency : Calculate measurements of central tendency and dispersal and Determine confidence intervals for data - Describe the vocabulary and principles of hypothesis testing and discuss application of course content to professional contexts.

Create confidence interval for the proportion of adults : Does this provide evidence of a change in behavior among Americans? Using your confidence interval, test an appropriate hypothesis and state your conclusion.

Explore the major issues inherent within the performance : Explore the major issues inherent within the performance appraisal process that may lead to any type of discrimination within an organization based on two (2) of the following: gender, disability, or denial of employment opportunity. Support your ..

Create confidence interval for true level of dissatisfaction : Does this provide evidence that the company has reached its goal? Using your confidence interval, test an appropriate hypothesis and state your conclusion.

Evaluate policies and processes that promote a diverse work : Summarize the issue of the case, and then explain the employment law that was violated.Evaluate the type of impact the violation had on the organization then determine two (2) ways the organization could mitigate the issue. Justify your response.B..

Most critical things to consider when forming team : Discuss what you believe are the most critical things to consider when forming a team. Describe how this may or may not be different from what you thought. Give an example of a time when you were on a team that was either well-formed or poorly-formed..

User Account

All Pages