Comparison of proportion of frequent binge drinkers

Assignment Help Basic Statistics

Reference no: EM131011836

1. A comparison of the proportion of frequent binge drinkers, revisited. Refer to Exercise 8.46. Redo the exercise in terms of the proportion of nonfrequent binge drinkers in each classi?cation. Explain how you could have obtained these results from the calculations you did in Exercise 8.46.

2. Effects of reducing air pollution. A study that evaluated the effects of a reduction in exposure to traf?c-related air pollutants compared respiratory symptoms of 283 residents of an area with congested streets with 165 residents in a similar area where the congestion was removed because a bypass was constructed. The symptoms of the residents of both areas were evaluated at baseline and again a year after the bypass was completed.24 For the residents of the congested streets, 17 reported that their symptoms of wheezing improved between baseline and one year later, while 35 of the residents of the bypass streets reported improvement.

(a) Find the two sample proportions.

(b) Report the difference in the proportions and the standard error of the difference.

Reference no: EM131011836

Questions Cloud

Cheating during a test : In Exercise 8.16, you examined the proportion of high school students who cheated on tests at least twice during the past year. Included in that study were the results for both 2002 and 2004.

Downloading music from the internet : A 2005 survey of Internet users reported that 22% downloaded music onto their computers. The ?ling of lawsuits by the recording industry may be a reason why this percent has decreased from the estimate of 29% from a survey taken two years before.

Discuss measures that can be taken to reduce these threats : What are the benefits of viewing security issues beyond the individual firm?

Estimate a point on the graph : Use your explicit equation for y in terms of x to estimate a point on the graph and find the value of dy/dx evaluated at this point.

Comparison of proportion of frequent binge drinkers : Refer to Exercise 8.46. Redo the exercise in terms of the proportion of nonfrequent binge drinkers in each classi?cation. Explain how you could have obtained these results from the calculations you did in Exercise 8.46.

Academic degrees and gender : Academic degrees and gender. Here are the projected numbers (in thousands) of earned degrees in the United States in the 2010-2011 academic year, classi?ed by level and by the sex of the degree recipient:28

Describe the issue and identify all the stake holders : Second, pick at least TWO issues (you must do more than two for maximum points) addressed by the chief during their tenure. Describe the issue and identify all the stake holders. Then identify the stake holder's take on the issues

Calculate the derivative with respect to x : For the expression ln(x2 + y2) = x7 + 8, calculate the derivative with respect to x. Calculate (dP/dT) assuming that pi = 2 x 10-5 and E = 9 megatons.

Find the probability of at least one offer : What is the probability that Julie is offered at least one of the three jobs?

User Account

All Pages