Question

An article presents the results of a study of soft drink and smoking habits in a...

An article presents the results of a study of soft drink and smoking habits in a sample of adults. Of 11705 people who said they consume soft drinks weekly, 2527 said they were smokers. Of 14685 who said they almost never consume soft drinks, 2503 were smokers. Find a 95% confidence interval for the difference between the proportions of smokers in the two groups. (Round the final answers to four decimal places.)

The 95% confidence interval is (  ,  )

Homework Answers

Answer #1

The statistical software output for this problem is :

The 95% confidence interval is : (0.0358 , 0.0551)

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A soft drink manufacturer wishes to know how many soft drinks adults drink each week. They...
A soft drink manufacturer wishes to know how many soft drinks adults drink each week. They want to construct a 95% confidence interval with an error of no more than 0.08. A consultant has informed them that a previous study found the mean to be 3.1 soft drinks per week and found the variance to be 0.49. What is the minimum sample size required to create the specified confidence interval? Round your answer up to the next integer.
A soft drink manufacturer wishes to know how many soft drinks adults drink each week. They...
A soft drink manufacturer wishes to know how many soft drinks adults drink each week. They want to construct a 95% confidence interval with an error of no more than 0.08. A consultant has informed them that a previous study found the mean to be 3.1 soft drinks per week and found the variance to be 0.49. What is the minimum sample size required to create the specified confidence interval? Round your answer up to the next integer.
­­­­­­­­­­­­­­­­Q-10 (1 of 1) A soft drink manufacturer wishes to know how many soft drinks adults...
­­­­­­­­­­­­­­­­Q-10 (1 of 1) A soft drink manufacturer wishes to know how many soft drinks adults drink each week. They want to construct a 95% confidence interval for the mean and are assuming that the population standard deviation for the number of soft drinks consumed each week is 1.1. The study found that for a sample of 949 adults the mean number of soft drinks consumed per week is 3.6 Construct the desired confidence interval. Round your answers to one...
A soft drink manufacturer wishes to know how many soft drinks adults drink each week. They...
A soft drink manufacturer wishes to know how many soft drinks adults drink each week. They want to construct a 85% confidence interval with an error of no more than 0.06. A consultant has informed them that a previous study found the mean to be 7.6 soft drinks per week and found the variance to be 0.81. What is the minimum sample size required to create the specified confidence interval? Round your answer up to the next integer.
(plz type the answer) 8.24 Soft drink consumption in New Zealand. A survey commissioned by the...
(plz type the answer) 8.24 Soft drink consumption in New Zealand. A survey commissioned by the Southern Cross Healthcare Group reported that 16% of New Zealanders consume five or more servings of soft drinks per week. The data were obtained by an online survey of 2006 randomly selected New Zealanders over 15 years of age.9 (a) What number of survey respondents reported that they consume five or more servings of soft drinks per week? You will need to round your...
1A. A soft drink manufacturer wishes to know how many soft drinks adults drink each week....
1A. A soft drink manufacturer wishes to know how many soft drinks adults drink each week. They want to construct a 95% confidence interval with an error of no more than 0.07. A consultant has informed them that a previous study found the mean to be 3.7 soft drinks per week and found the variance to be 1.21. What is the minimum sample size required to create the specified confidence interval? Round your answer up to the next integer. 1B....
A medical researcher conjectures that smoking can result in the wrinkled skin around the eyes. The...
A medical researcher conjectures that smoking can result in the wrinkled skin around the eyes. The researcher recruited 150 smokers and 250 nonsmokers to take part in an observational study and found that 95 of the smokers and 105 of the nonsmokers were seen to have prominent wrinkles around the eyes (based on a standardized wrinkle score administered by a person who did not know if the subject smoked or not). How do the smokers compare to the non-smokers? Find...
A group of statistics students conducted a survey about smoking habits on campus to determine the...
A group of statistics students conducted a survey about smoking habits on campus to determine the proportion of students who believe that vaping is less harmful than smoking cigarettes. Of the 100 students surveyed, 75% think that smoking hookah is less harmful than smoking cigarettes. Since we don’t have an estimate for the population proportion (p), we will use when calculating the standard perror.a.Verify that the conditions are met to use a Normal Model. 4b. Create a 90% Confidence Interval....
In one study of smokers who tried to quit smoking with nicotine patch therapy, 39 were...
In one study of smokers who tried to quit smoking with nicotine patch therapy, 39 were smoking one year after the treatment, and 32 were not smoking one year after the treatment (based on data from "High-Dose Nicotine Patch Theory," by Dale et al., Journal of the American Medical Association, Vol. 274, No.17). Provide a 99% confidence interval for the proportion of smokers who are smoking again one year after their treatment.
Medical researchers are concerned about the association between maternal smoking habits and the need for caesarian...
Medical researchers are concerned about the association between maternal smoking habits and the need for caesarian section during birth. Suppose the researchers gather 423 expecting mothers in their third trimester and follow them through pregnancy to examine the incidence of caesarian. Suppose out of the 102 mothers that reported smoking cigarettes at least once during pregnancy, 59 of them were referenced to have needed caesarian intervention during delivery, while 73 of the mothers with no smoking history reportedly needed the...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT