Construct the indicated confidence interval for the difference between population proportions p1 - p2. Assume that the samples are independent and that they have been randomly selected. In a random sample of 500 people aged 20-24, 22% were smokers. In a random sample of 450 people aged 25-29, 14% were smokers. Construct a 95% confidence interval for the differencebetween the population proportions p1 - p2.

In a random sample of 144 observations, the sample proportion is 0.90. Construct a 95% confidence interval for the true proportion P.

Leana is interested in the proportion of people who live in her area who own a dog. She randomly selects 50 addresses within a one-mile radius of her home and visits each to ask if they own at least one dog. Leana finds that 29 of the 50 homes she visited had at least one dog. Construct a 98% confidence interval for the population proportion of people who live within one mile of Leana's home who own at least one dog.

A researcher wanted to compare the percentages of men and women who play the lottery.  They randomly sampled 300 women and found that 66 of them play the lottery.  In a random sample of 500 men, they found that 160 of them play the lottery.  Construct a 90% confidence interval for the difference in the percentage of women and men who play the lottery. Find the point estimate. Find the margin of error. Interpret the confidence interval in terms of this problem.

If n = 480 and X = 384, construct a 90% confidence interval for the population proportion, p.Give your answers to three decimals < p <

In a random sample of 600 adults, 270 described themselves as vegetarians. Construct a 99% confidence interval for the proportion of all adults who describe themselves as vegetarians.

Assume that a sample is used to estimate a population proportion p. To find the 95% confidence interval for a sample of size 250 with 140 successes, you need to use which one the following calculator

If a 90%, a 95% and a 99% confidence interval are foung for a population mean, describe how the 3 interval estimates are related to each other. Which of the 3 intervals is most likely to contain the population mean?

Construct a 90​% confidence interval of the population proportion using the given information.   x=240, n=300

In a random sample of 250 high school students, it was found that 85.2% (213) of them later graduated. Find the 95% and 98% confidence interval for the true proportion of all high school students who graduate. Compare the two proportions.