Mathematics, 23.04.2021 14:00 mely2668
A bag contains 3 red marbles and 4 blue marbles
a marble is taken randomly from the bag and replaced
another marble is taken from the bag
work out the probability that the two marble taken from the bag are the same colour
give your answer as a fraction
Answers: 2
Mathematics, 21.06.2019 18:30
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.
Answers: 1
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a marble is taken randomly from the bag and replac...
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