Mathematics, 26.07.2019 10:30 soliseric879
Suppose the sediment density (g/cm) of a randomly selected specimen from a certain region is normally distributed with mean 2.65 and standard deviation .85 (suggested in "modeling sediment and water column interactions for hydrophobic pollutants," water research, 1984: 1169–1174). a. if a random sample of 25 specimens is selected, what is the probability that the sample average sediment density is at most 3.00? between 2.65 and 3.00? b. how large a sample size would be required to ensure that the first probability in part (a) is at least .99?
Answers: 1
Mathematics, 21.06.2019 19:00, sonyalehardez
Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?
Answers: 2
Mathematics, 21.06.2019 22:00, kiiya33
Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no
Answers: 1
Suppose the sediment density (g/cm) of a randomly selected specimen from a certain region is normall...
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