A recent article describes the success of business schools in Europe and the demand on that continent for the MBA degree. The article reports that a survey of 280 European business positions resulted in the conclusion that only one-seventh of the positions for MBAs at European businesses are currently filled. Assuming that these numbers are exact and that the sample was randomly chosen from the entire population of interest, give a 90% confidence interval for the proportion of filled MBA positions in Europe.
Answer to relevant QuestionsAccording to Fortune, solar power now accounts for only 1% of total energy produced. If this number was obtained based on a random sample of 8,000 electricity users, give a 95% confidence interval for the proportion of users ...A real estate agent needs to estimate the average value of a residential property of a given size in a certain area. The real estate agent believes that the standard deviation of the property values is σ = $5,500.00 and ...In problem 6–25, give a 95% confidence interval for the variance of the population of billionaires’ worth in dollars. In problem The following is a random sample of the wealth, in billions of U.S. dollars, of individuals ...A company believes its market share is about 14%. Find the minimum required sample size for estimating the actual market share to within 5% with 90% confidence. According to the Wall Street Journal, an average of 44 tons of carbon dioxide will be saved per year if new, more efficient lamps are used. Assume that this average is based on a random sample of 15 test runs of the new ...
Post your question