Question

A random sample of n 1 = 273 people who live in a city were selected...

A random sample of n 1 = 273 people who live in a city were selected and 105 identified as a "dog person." A random sample of n 2 = 99 people who live in a rural area were selected and 52 identified as a "dog person." Find the 90% confidence interval for the difference in the proportion of people that live in a city who identify as a "dog person" and the proportion of people that live in a rural area who identify as a "dog person." Round answers to to 4 decimal places.

< p 1 − p 2 <

Homework Answers

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 random sample of n1n1 = 219 people who live in a city were selected and...
A random sample of n1n1 = 219 people who live in a city were selected and 88 identified as a "dog person." A random sample of n2n2 = 110 people who live in a rural area were selected and 66 identified as a "dog person." Find the 95% confidence interval for the difference in the proportion of people that live in a city who identify as a "dog person" and the proportion of people that live in a rural area...
A random sample of 1300 voters in a particular city found 273 voters who voted yes...
A random sample of 1300 voters in a particular city found 273 voters who voted yes on proposition 200. Find a 95% confidence interval for the true percent of voters in this city who voted yes on proposition 200. Express your results to the nearest hundredth of a percent.
Market researchers selected a random sample of people from region A and a random sample of...
Market researchers selected a random sample of people from region A and a random sample of people from region B. The researchers asked the people in the samples whether they had tried a new product. The difference between the sample proportions (B minus A) of people in the regions who indicated they had tried the new product was 0.15. Under the assumption that all conditions for inference were met, a hypothesis test was conducted with the alternative hypothesis being that...
In a local university, 40% of the students live in the dormitories. A random sample of...
In a local university, 40% of the students live in the dormitories. A random sample of 80 students is selected for a particular study. What is the sampling distribution of What is the probability that the sample proportion is between 0.30 and 0.55(Hint: first draw the normal curve to identify the area)
Gamers" are described as people who regularly play video games. A random sample of 80 people...
Gamers" are described as people who regularly play video games. A random sample of 80 people was selected and 50 were found to be male. The 95% confidence interval for the proportion based on this sample is ________. A. (0.519, 0.731) B. (0.571, 0.679) C (0.463, 0.787) D. (0.536, 0.714)
A random sample of construction workers was taken in a large city. Of the 125 workers...
A random sample of construction workers was taken in a large city. Of the 125 workers sampled, 21 were unemployed. We wish to construct a 99% confidence interval for the proportion of unemployed construction workers in this city. Assume all assumptions and conditions are met. Part 1 - find the sample proportion part 2 What critical value would you use to be 99% confident? Part 3 Use the appropriate formula to build the confidence interval. Part 4 If we wanted...
1. In a random sample of 58 people aged 20-24, 22.7% were smokers. In a random...
1. In a random sample of 58 people aged 20-24, 22.7% were smokers. In a random sample of 110 people aged 25-29, 29.5% were smokers. Calculate the margin of error for a 95% confidence interval that can be used to estimate the difference between the population proportions p1 − p2 of the smokers in these age groups. Show your answer in decimal form, rounded to three decimal places. 2. Confidence interval for the difference between population proportions. (Assume that the...
A committee is selected to vote yes or no on a proposed location for a new...
A committee is selected to vote yes or no on a proposed location for a new parts distribution center. The committee is composed of three people who live in (A)bbeytown, five people who live in (B)arnsborough, six people who live in (C)hatterville, and eight people who live in (D)itherburgh. At least 17 votes are required for a decision, and the committee members will vote in blocs according to their places of residence. List all winning coalitions and identify the critical...
9. If I have a sample of 200 randomly selected people in a city of whom...
9. If I have a sample of 200 randomly selected people in a city of whom 120 are Christians, what would be a 95% confidence interval for the proportion of Christians in that city? If I want my confidence interval with a margin of error of 1% or less, how many people should I have in my sample? please show in excel in with formulas
Consider a survey of customers who bought a Christmas tree during the holiday season. Respondents were...
Consider a survey of customers who bought a Christmas tree during the holiday season. Respondents were classified as either living in a rural area (population #1) or living in an urban area (population #2). Each respondent was asked whether they purchased a natural tree or an artificial tree. The population proportions in this study are the proportion of persons who bought a natural tree (“success”). (Assume, for this analysis, that the survey was conducted by drawing an SRS from rural...