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An environmental agency worries that many cars may be violating clean air emissions standards. The agency hopes to check a sample of vehicles in order to estimate that percentage with a margin of error of 6% and 90% confidence. To gauge the size of the problem, the agency first picks 80 cars and finds 20 with faulty emissions systems. How many should be sampled for a full investigation?The data set in the accompanying table contains last month's credit card purchases of 100 customers randomly chosen from a segment of a major credit card issuer. The marketing department is considering a special offer for customers who spend more than $1000 per month on their card. From these data construct a 90% confidence interval for the proportion of customers in this segment who will qualify.LOADING... Click the icon to view the data table.For parts a and b, use the t tables, software, or a calculator to estimate.a) the critical value of t for a 90% confidence interval with df=27.b) the critical value of t for a 99% confidence interval with df=88.a) What is the critical value of t for a 90% confidence interval with df=27? (Round to two decimal places as needed.)For parts a and b, use the t tables, software, or a calculator to estimate.a) the critical value of t for a 90% confidence interval with df=24.b) the critical value of t for a 98% confidence interval with df=82.a) What is the critical value of t for a 90% confidence interval with df=24? (Round to two decimal places as needed.)b) What is the critical value of t for a 98% confidence interval with df=82? (Round to two decimal places as needed.)
wedding lists a voyage from tradition to cash valuewith spring the wedding season starts again. in 2006 in france
Projecting PEDEX and UPS stock prices - Prepare a graph from the historical data and forecast on the same graph.
Locate an article regarding ethics considerations in financial management. Write down an article analysis in which you address the following items:
Assume that you are the senior VP of marketing and communications for a medium sized producer headquartered in your city. Your firm is bidding on a major contract in an Asian country.
Ratio Analysis should include ratios for the years 2011 and 2012 and should include comparisons between McDonalds and Wendy's.
Explain Management believes they can increase the price per chair by 10 percent in this new situation and improve profits by 10 percent.
Historically what were apple's major competitive advantages? Why did Apple fail to build on these advantages to lead the industry? in terms of missteps and rival moves
Calculate the required preretirement real annual savings necessary to meet your consumtion goals. Compare to your answer (b). Why is there a difference?
Please identify a business person (profit or non-profit) who you admire and articulate: How this person may influence you for your future in business.
explains the reasons why an organization should take action regarding its HRIS based on your assessment of the future
Describe how risk has impacted a project that you have been associated with as a team member or project leader. Provide at least two instances where surprise events impacted the project and how the issue was resolved.
This answer gives an explanation on the concept of evidence based management and its use in the decision making process in the business environment.
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