While considering buying advertising spots during television programming on a certain nes-work, an online retailer asks the television network to estimate the percentage uf its viewers who purchase goods online. The television network has several million viewers. The online retailer requires the estimate to have a margin of error of at most three percentage points with a confidence level of 99%. Of the following, which is the smallest sample size that the television network can select to meet the online retailer's requirement? (A) 30 (B) 1070 (C) 1510 (D) 1850 (E) At least 10% of the network's viewers

It is estimated that 60% of U.S. households subscribe to cable TV. You would like to verify this statement for your class in mass communications. If you want your estimate to be within 5 percentage points, with a 95% level of confidence, how many households should you sample? (Use t Distribution Table & z Distribution Table.) (Round your answer to the next whole number.)

A food store owner wants to determine the type of products customers prefer to buy. The owner surveyed 40 customers on a day when the store had 335 customers, and found that 40% of those surveyed preferred to buy organic products over non-organic products. Assuming a 95% confidence level, which statement holds true? A. As the sample size is too small, the margin of error is 0.127. B. As the sample size is too small, the margin of error cannot be trusted. C. As the sample size is appropriately large, the margin of error is 0.127. D. As the sample size is appropriately large, the margin of error is 0.152.

A new airline has just expanded its network to Australia and is interested in determining the proportion of its Australian customers who are flying overseas for business.  Based on its experience in other markets, the airline estimates that the population proportion is 30%. It wants its confidence level to be 98%, and the error to be within 5%. How many random customers should the airline survey?

Question 3In a survey about a new gardening product, 80% of respondents report they would buy the product again. The margin of error for the survey is 5%. Based on that margin of error, what range reflects the population's true response?

Question 22You’re going to draw a random sample of professional football players because you want to know what percentage have completed high school. You want to have a margin of error of up to 0.03 at a confidence level of 90%. How big should your sample be?1 pointMinimum 456At least 30Minimum 748Minimum 1068