Question: What is the minimum sample size n required to estimate
What is the minimum sample size n required to estimate p with 95% confidence if the desired margin of error E = 0.08 ? The population proportion is estimated as = 0.36 from prior studies. What happens to n if the desired margin of error increases to E = 0.12?
Answer to relevant QuestionsIn the planning stage, a sample proportion is estimated as = 40/50 = 0.80. Use this information to compute the minimum sample size n required to estimate p with 99% confidence if the desired margin of error E = 0.12 . What ...Newscasters wish to estimate the proportion of registered voters who support the incumbent candidate in the mayoral election. In an earlier poll of 240 registered voters, 110 had supported the incumbent candidate. ...A recent study by Allstate Insurance Co. finds that 82% of teenagers have used cell phones while driving (The Wall Street Journal, May 5, 2010). Suppose this study was based on a random sample of 50 teen drivers.a. Construct ...According to a survey of 1,235 businesses by IDC, a market-research concern in Framingham, Massachusetts, 12.1% of sole proprietors are engaging in e-commerce (The Wall Street Journal, July 26, 2007).a. With 95% confidence, ...Subprime lending was big business in the United States in the mid-2000s, when lenders provided mortgages to people with poor credit. However, subsequent increases in interest rates coupled with a drop in home values ...
Post your question