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A consumer group studied two different manufacturers of cars, j and k, to investigate differences in gas mileage for cars made by the two manufacturers. For a similar type of car, a random sample of 15 cars from j and a random sample of 12 cars from k were selected, and the gas mileages, in miles per gallon (mpg), were recorded. The difference in the sample mean gas mileages was used to construct the 90 percent confidence interval (3. 5,5. 7). Assuming all conditions for inference were met, which of the following is a correct interpretation of the interval?
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SAT, 24.06.2019 22:30, Chicagofire28
25 points fast click to review the online content. then answer the questions(s) below, using complete sentences. scroll down to view additional questions. online content: site 1. take the study skills assessment. identify one area in which you could improve. then describe what steps you will take to improve in that area.
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SAT, 25.06.2019 22:00, hannah1571
In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.
Answers: 1
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A consumer group studied two different manufacturers of cars, j and k, to investigate differences in...
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