Based on survey results, the proportion of U.S. adults who own at least one Apple product (iphone, ipad, macbook, etc) is 0.42. This point estimate would be unbiased and most accurate if the survey were based on which of the following? A random sample of 1,000 U.S. adults A random sample of 1,800 U.S. adults A random sample of 2,500 U.S. college students An internet survey posted on TechGuru.com with 3,100 responses

A market research firm is interested in studying consumer preferences for smartphones in a particular city. They target a population of 5000 residents. Of these, 40% are iPhone users, 30% are Android users, 20% are users of other operating systems, and 10% do not own smartphones. The firm randomly selects 1000 residents for their survey. Identify the population, sample, variables to be studied and the type of variable to be studied. Explain your answers.

A consumer survey was conducted to examine patterns in ownership of tablet computers, cellular telephones, and Blu-ray players. The following data were obtained: 315 people had tablet computers, 236 had cell phones, 269 had Blu-ray players, 69 had all three, 64 had none, 94 had cell phones and Blu-ray players, 57 had cell phones but no computers or Blu-ray players, and 108 had computers and Blu-ray players but no cell phones. (Round your answers to one decimal place.)(a) What percent of the people surveyed owned a cell phone? %(b) What percent of the people surveyed owned only a cell phone?

Based on survey results, the mean amount of credit card debt for U.S. adults under 35 is $8,724. This point estimate would be unbiased and most accurate if the survey were based on which of the following? A random sample of 1,500 U.S. adults under 35 A random sample of 2,800 U.S. adults under 35 A random sample of 3,000 U.S. college students A national television news station poll with 3,500 responses

A researcher would like to estimate p, the proportion of U.S. adults who support raising the federal minimum wage.Due to a limited budget, the researcher obtained opinions from a random sample of only 1,432 U.S. adults. With this sample size, the researcher can be 95% confident that the obtained sample proportion will differ from the true proportion (p) by no more than which of the following percentages (answers are rounded)? 0.07% 2.6% 3.0% 5.2%

A survey was given to a random sample of voters in the United States to ask about their preference for a presidential candidate. The percentage of people who said they preferred Candidate A was 24%. The margin of error for the survey was 5%. Which of the following is a reasonable value for the actual percentage of the population that prefers Candidate A?