Confidence interval for the difference in two proportions

Assignment Help Basic Statistics

Reference no: EM1387750

A telephone company service representative believes that the proportion of customers completely satisfied with their local telephone service is different between the south and the west. The representative's belief is based on the results of a survey. The survey included a random sample of 600 southern residents and 580 western residents. 59% of the southern residents and 55% of the western residents reported that they were completely satisfied with their local telephone service. Find the 95% confidence interval for the difference in two proportions.

Step 1. Find the point of estimate that should be used in constructing the confidence interval.

Step 2. Find the margin of error. ( Round your answer to 6 decimals.)

Step 3. Construct the 95% confidence level lower and upper limit round answer to 3 decimals.

Reference no: EM1387750

Questions Cloud

Ages of circulating pennies having mean : The ages of circulating pennies are right skewed. Most circulating pennies were minted relatively recently, and extremely old pennies are rare. Assume the ages of circulating pennies have a mean of 12.2 years and a standard deviation of 9.9 years.

Sampling distribution of the sample mean : a. What is the probability that one randomly selected student scores above 1100 on the GRE? b. Describe the sampling distribution of the sample mean for the 16 students.

Government should do more to protect consumers : Explain whether the U.S. government should do more to protect consumers or if consumers should become more aware and informed in today's business environment.

Picnic tables and chairs to sell various stores : CT Furniture makes wooden picnic tables and chairs to sell various stores. These stores request both finished and unfinished furniture. To make this furniture

Confidence interval for the difference in two proportions : Western residents reported that they were completely satisfied with their local telephone service. Find the 95% confidence interval for the difference in two proportions.

In what sequence should the jobs be processed : In what sequence should the jobs be processed according to the FCFS scheduling rule? In what sequence should the jobs be processed according to the EDD scheduling rule?

Probability that the sample mean would differ : What is the probability that the sample mean would differ from the true mean by greater than .04 dollars if a sample of 183 5 gallon pails is randomly selected? Round answer to 4 decimal places.

Explain in detail how two other factors specific : explain in detail how two other factors specific to this company might make it difficult to evaluate the financial impact of this strategy.

Audits are commonly associated with the financial : Audits are commonly associated with the financial and accounting records of the business. Using the publicly available financial statements of the corporation you

User Account

All Pages