Calculate the standard error of the sample proportion

Assignment Help Basic Statistics

Reference no: EM131417383

In a Gallup poll done in 2007, a randomly selected sample of n = 254 U.S. parents was asked how often the television was on when they ate dinner as a family. About 33% of the sample said "always" (Source: www.pollingreport.com/ life.htm).

a. Calculate the standard error of the sample proportion.

b. Calculate a 95% confidence interval that estimates the proportion of U.S. families with children who always have the television on when they eat dinner as a family.

c. Calculate a 90% confidence interval for this situation.

d. Write a sentence that interprets the confidence interval found in part (c).

Reference no: EM131417383

Questions Cloud

Write a sentence or two that interprets given interval : Suppose that in a random sample of 300 employed Americans, there are 57 individuals who say that they would fire their boss if they could. Calculate a 95% confidence interval for the population proportion. Write a sentence or two that interprets t..

What motivational techniques are being used : Select any TV series that is work-based. View at least two episodes and analyze: What motivational techniques are being used? By whom? Is this consistent over episodes? Bring in as much from the chapter as possible as you hone your observatio..

Create policies regarding pay-benefits for the selected job : It is your responsibility as the HR Director of the same organization from Assignment 2 to a) create policies regarding pay and benefits for the selected job opportunity, and b) develop methods for both addressing unionization and implementing OSH..

Problem regarding the jumpstarter case : In the late nineties, Jumpstarter, Inc. became aware that its product Jumpstart I-- a pacemaker designed to regulate heartbeat within the body -- had begun to fail when the temperature rose to above normal body temperature. The company asked hospi..

Calculate the standard error of the sample proportion : Calculate a 95% confidence interval that estimates the proportion of U.S. families with children who always have the television on when they eat dinner as a family.

What happens to the width of the confidence interval : On the basis of the values of z* found in parts (a) through (c), explain what happens to the width of the confidence interval when the confidence level is increased.

What type of support does the writer use : Does the writer catch your attention and clearly convey a clear purpose in the introduction? If so, what strategies did he or she use to accomplish this? If not, what suggestions can you provide to strengthen the introduction and clarify the purpo..

Application-a valid contract : There are four essential elements that must be present for an agreement to be considered a contract enforceable in a court of law. All four of these elements must be present to have a contract.

Explain the purpose of a needs analysis : Explain the purpose of a needs analysis and the necessity of conducting one before implementing training. What risks does one run if a needs analysis is not conducted before training is implemented? In addition, talk about a needs analysis within ..

User Account

All Pages