A retailer selling air conditioners offers customers a summer deal during the first 13 days of June. The store promises to refund 25% of the air conditioner purchase price if the average temperature, over the first 13 days of June, is more than 2.5 degrees above the mean temperature for the first 13 days in June. Historical data indicates that daily temperatures in the first 13 days of June are normally distributed with a mean of 29.0 degrees and a standard deviation of 4.7 degrees. What is a probability that a customer will receive a 25% refund? (4 dec places)
A retailer selling air conditioners offers customers a summer deal during the first 13 days of...
Revenue in a cosmetics company comes mostly from their hair products' sales. The marketing department wants to estimate the proportion of customers who buy shampoo. How many customers do they need to sample to get a confidence interval for the true mean at 98% confidence level, with an error of +/- 0.02? 1. A heating and cooling company advertises that any customer buying an air conditioner during the first 16 days of July will receive a 25 percent discount if...
Can Technology Save Sears? Sears, Roebuck used to be the largest retailer in the United States, with sales representing 1 to 2 percent of the U.S. gross national product for almost 40 years after World War II. Since then, Sears has steadily lost ground to discounters such as Walmart and Target and to competitively priced specialty retailers such as Home Depot and Lowe’s. Even the merger with Kmart in 2005 to create Sears Holding Company failed to stop the downward...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...