Mathematics, 21.10.2019 21:00 abbymcd05

Item 12 given f(x)=3x2−5x−2 . what is the value of f(−23) ?

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Mathematics, 21.06.2019 14:30, bossninja97588

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Mathematics, 21.06.2019 16:40, Alex9089435028

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Mathematics, 21.06.2019 18:30, leobaut6145

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

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Mathematics, 21.06.2019 22:50, Yangster9305

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables