Question: According to the Newspaper Association of America the average visitor
According to the Newspaper Association of America, the average visitor to online newspaper sites spends 45 minutes per month reading online news content. Assuming a population standard deviation of 10 minutes and a simple random sample of 30 online newspaper readers, what is the probability that members of this group will average at least 40 minutes reading online newspapers during the coming month?
Answer to relevant QuestionsAccording to the Federal Reserve System, 46% of U.S. households have credit-card debt. For simple random samples of size n, with n > 30, describe the sampling distribution of p = the proportion of households in the sample ...According to the Investment Company Institute, 40% of U.S. households have an Individual Retirement Account (IRA). Assuming the population proportion to be π = 0.40 and that a simple random sample of 400 households has been ...A civic organization includes 200 members, who have an average income of $58,000, with a standard deviation of $10,000. A simple random sample of n = 30 members is selected to participate in the annual fund-raising drive. ...The campaign manager for a political candidate claims that 55% of registered voters favor the candidate over her strongest opponent. Assuming that this claim is true, what is the probability that in a simple random sample of ...Based on past experience, 20% of the contacts made by a firm’s sales representatives result in a sale being made. Charlie has contacted 100 potential customers but has made only 10 sales. Assume that Charlie’s contacts ...
Post your question