Mathematics, 24.03.2020 06:12 louistwdg
Researchers studying the number of electric fish species living in various parts of the Amazon basin were interested in whether the presence of tributaries affected the local number of elecctric fish species in the main rivers. They counted the number of electric fish species above and below the entrance point of a major tributary at 12 different river locations. Here's what they found:Tributary - Upstream number of species - Downstream number of speciesIca - 14 - 19Jutai - 11 - 18Japura - 8 - 8Coari - 5 - 7Purus - 10 - 16Manacapuru - 5 - 6Negro - 23 - 24Madeira - 29 - 30Trombetas - 19 - 16Tapajos - 16 - 20Xingu - 25 - 21Tocantins - 10 - 12a) What is the mean difference in the number of species between areas upstream and downstream of the tributary? What is the 95% confidence interval of this mean difference?b) Test the hypothesis that the tributaries have no effect on the number of species of electric fish. c) State the assumptions that you had to make to complete parts (a) and (b).
Answers: 2
Mathematics, 21.06.2019 18:00, sbailey0962
Sarah used her calculator to find sin 125 degrees. she wrote down sin sin125 degrees.57. how could sarah recognize that her answer is incorrect?
Answers: 1
Mathematics, 22.06.2019 02:30, sierram298
Adoughnut shop charges $0.50 for each doughnut and $1 for a carryout box. shirley has $10 to spend. which inequality can be used to find d, the number of doughnuts she could have bought if she also wants them in one carryout box?
Answers: 1
Mathematics, 22.06.2019 03:00, willow2444
Taylor graphs the system below on her graphing calculator and decides that f(x)=g(x) at x=0, x=1, and x=3. provide taylor some feedback that explains which part of her answer is incorrect and why it is incorrect. f(x)=2x+1 g(x)=2x^2+1
Answers: 2
Researchers studying the number of electric fish species living in various parts of the Amazon basin...
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