Question

23.) Assume that a sample is used to estimate a population proportion p. Find  the margin of error E given that the confidence level is 99%, the sample size is 1216, of which 32% are successes.  Round your answer to four decimal places.

24.)Find the margin of error E. In a random sample of 212 college students, 105 had part-time jobs. Find the margin of error E for the 95% confidence interval used to estimate the population proportion. Round your answer to four decimal places.

25.)Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p.

n = 97, x = 46; 98% confidence

26.) Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p.

When 319 college students are randomly selected and surveyed, it is found that 120 own a car. Find a 99% confidence interval for the true proportion of all college students who own a car.

Answer 1

Solution:

23.) Assume that a sample is used to estimate a population proportion p. Find  the margin of error E given that the confidence level is 99%, the sample size is 1216, of which 32% are successes.  Round your answer to four decimal places.

Answer:

24.)Find the margin of error E. In a random sample of 212 college students, 105 had part-time jobs. Find the margin of error E for the 95% confidence interval used to estimate the population proportion. Round your answer to four decimal places.

Answer:

25.)Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p.

n = 97, x = 46; 98% confidence

Therefore, the confidence interval is:

26.) Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p.

When 319 college students are randomly selected and surveyed, it is found that 120 own a car. Find a 99% confidence interval for the true proportion of all college students who own a car.

Therefore, the confidence interval is: