An experiment was conducted to determine the effectiveness of a method designed to remove oil wastes found in soil. Three contaminated soil samples were treated. After 95 days, the percentage of contamination removed from each soil sample was measured, with a mean of 49.3 percent and a standard deviation of 1.5 percent. If we wished to narrow the boundary around μ for a 98 percent confidence interval to within 0.5 percent, how many soil samples should be in our experiment.
437
3
9
6
33
Correct option
n=[talpha/2*sd)/E]^2=(6.965*1.5/0.5)^2=436.6=437
Answer 437
Please upvote if this helps you out. Thank You!
An experiment was conducted to determine the effectiveness of a method designed to remove oil wastes...
An experiment was conducted to determine the effectiveness of a method designed to remove oil wastes found in soil. Three contaminated soil samples were treated. After 95 days, the percentage of contamination removed from each soil sample was measured, with a mean of 49.3 percent and a standard deviation of 1.5 percent. Estimate the mean percentage of contamination removed at a 98 percent confidence level. An experiment was conducted to determine the effectiveness of a method designed to remove oil...
8. value: 10.00 points An experiment was conducted to determine the effectiveness of a method designed to remove oil wastes found in soil. Three contaminated soil samples were treated. After 95 days, the percentage of contamination removed from each soil sample was measured, with a mean of 49.3 percent and a standard deviation of 1.5 percent. If we wished to narrow the boundary around u for a 98 percent confidence interval to within 0.5 percent, how many soil samples should...
Case study Company Case Campbell Soup Company: Watching What You Eat You might think that a well-known, veteran consumer products company like the Campbell Soup Company has it made. After all, when people think of soup, they think of Campbell’s. In the $5 billion U.S. soup market, Campbell dominates with a 44 percent share. Selling products under such an iconic brand name should be a snap. But if you ask Denise Morrison, CEO of Campbell, she’ll tell you a different...
summatize the following info and break them into differeng key points. write them in yojr own words apartus 6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...