Mathematics, 18.09.2019 02:20 chris018107
You successfully completed statistics, and the math department chair recruited you to be a tutor. it’s day one on the job, and your first pupil is correcting her mistakes on a recent statistics exam. she incorrectly listed the reasons that researchers use random sampling when conducting a survey. she wants to know why researchers should use a random sample to conduct a survey. check all that apply. (a) a random sample is likely to avoid bias. (b) in a random sample some members of the population are more likely to be selected than others. (c) random samples provide consistency and systematically favor one choice over every other choice in each survey question. (d) random sampling will provide a more representative sample of population. (e) researchers can use a random sample to draw conclusions about the population.
Answers: 2
Mathematics, 21.06.2019 15:00, m4167281
Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?
Answers: 1
Mathematics, 21.06.2019 22:30, verdolaga2017me
Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.
Answers: 1
You successfully completed statistics, and the math department chair recruited you to be a tutor. it...
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