Interval that is certain to contain the actual proportion

Reference no: EM131411142

This is a modification of Exercise 1. Suppose listeners to a late-night radio talk show were asked to call and report whether or not they had ever seen a ghost.

a. What is this type of sample called?

b. Do you think the proportion reporting that they had seen a ghost for the radio poll would be higher or lower than the proportion for a poll done using a random sample of adults in the United States? Explain.

Exercise 1
Refer to Exercise 2. The Roper Organization selected a random sample of adults in the United States for this poll. Suppose listeners to a late-night radio talk show were asked to call and report whether or not they had ever seen a ghost.

a. What is this type of sample called?

b. Do you think the proportion reporting that they had seen a ghost for the radio poll would be higher or lower than the proportion for the Roper poll? Explain.

Exercise 2
The Roper Organization conducted a poll in 1992 (Roper, 1992) in which one of the questions asked was whether or not the respondent had ever seen a ghost. Of the 1525 people in the 18- to 29-year-old age group, 212 said "yes."

a. What is the approximate margin of error that accompanies this result?

b. What is the interval that is 95% certain to contain the actual proportion of people in this age group who have seen a ghost?

Reference no: EM131411142

Questions Cloud

Propose an amendment to the constitution : Need help with my homework which consist of two parts that must reflect each other. The first part is a discussion post and the second part is an assignment that must reflect what is stated in the discussion post. So they must go hand in hand. ..

What are the progressive ideals outlined in baums : What are the Progressive ideals outlined in Baum's 'The Wizard of Oz'? Is it a significant piece of political satire or is it 'just' a children's story? If it is satire, who represents each of the principle characters and why did the progressive m..

How the transaction affected campbell soup’s balance sheet : How did the transaction affect the accounting equation from Campbell Soup's perspective?

Influence of black power : Describe the black women civil rights by useing the influence of Black Power?

Interval that is certain to contain the actual proportion : What is the interval that is 95% certain to contain the actual proportion of people in this age group who have seen a ghost?

What was radical reconstruction : Choose one of the following questions to answer: 1. What was radical Reconstruction? Was it radical?

How the issuance of stock could increase a company’s credit : Describe how the issuance of stock to reduce debt, update equipment, and increase current assets affects the fundamental accounting equation.

Major witchcraft scares in the chesapeake colonies : 1. Explain why there were no major witchcraft scares in the Chesapeake colonies and no uprising like Bacon's Rebellion in New England. Consider the possible social, economic, and religious causes of both phenomena.

Analyze an ethical issue that a business has faced : You will identify and analyze an ethical issue that a business, corporation or profession has faced, or is currently confronting. You must first submit the proposed issue you intend to research for approval before proceeding.

User Account

All Pages